Search the Dam Incident Database

The ASDSO Dam Incident Database provides basic information on dam safety incidents in the U.S.  The database is not considered comprehensive of all dam safety incidents, both historic and current, and reflects only the data that ASDSO has been able to collect. 

In 2010, ASDSO began to gather dam safety incident information (both failure and non-failure) from the state dam safety programs.  This database has some information from federal dam owning or regulating agencies but, again, this is not complete. Much of the identifying information on specific dams is obtained from the National Inventory of Dams. ASDSO does not provide assurance that all the information in the database is completely accurate. If you see an error or have additional information to provide for a specific incident, please contact Paige Spragens at [email protected]. If you would like to provide additional incident information to the database, please contact Paige. ASDSO has a spreadsheet (download at this link) that provides an explanation of each field and can be used as an entry form to submit incident information.

 

 

Dam Name State Downstream Hazard Potential Incident Type Incident Date Incident Driver Incident Mechanism 1 Incident Mechanism 2 Incident Mechanism 3 Incident ID Incident Description Named Hydrologic Event EAP Enacted (Y/N) due to Incident Fatalities (Number) Number of People Evacuated Number of Habitable Structures Evacuated Number of Habitable Structures Flooded Other Infrastructure Impacts Economic Damages (in $) Response Volume released at failure (ac-ft) Additional Remarks or Updates Owner Type Dam Type Primary Purpose(s) EAP Dam Height Max Storage (ac-ft) Surface Area (acres) Year Completed NID Number River Name Latitude Longitude Year Modified Regulatory Agency(ies) Incident Time Incident Duration Incident Report Produced Information Sources Attachments
MILL RIVER MA H Failure 01/01/1874 Unknown Unknown MA00000-100 No 139 Faulty Construction
Fatalities: 139 - including 43 children under age of 10 		RE O 40 ft 0.00 MA00000 MILL RIVER ON THE CONNECTICUT RIVER 0 0
MUD POND MA Failure 01/01/1886 Seepage/Internal Erosion Piping MA00000-101 No 7 Rebuilt; new dam (Lee Lake) failed in 1968.
Fatalities: 7 - 		0.00 MA00000 GREENWATER BROOK 0 0
SOUTH FORK (AKA JOHNSTOWN DAM) PA H Failure 01/01/1889 Hydrologic/Flooding Overtopping PA00000-102 No 2209 $10 million to $25 million 37’ high wall of water hit Johnstown, 9 miles downstream. The dam had a deficient outlet and spillway, had been improperly maintained, and was overtopped and washed out during heavy rains. It took 57 minutes for the 30-40 ft-high floodwave (which had re
Fatalities: 2209 - Victims: 99 entire families, 396 children under the age of 10, and 755 unidentified victims. 45% of the victims whose ages were known were under 20. More than 1 in every 5 residents of Johnstown were killed. 		RE R 72 ft 0.00 PA00000 LITTLE CONEMAUGH RIVER 0 0
WALNUT GROVE AZ H Failure 01/01/1890 Unknown Spillway Deficiency AZ00000-103 No Destroyed town of Seymour (pop: <10); huge economic losses in Wickenburg; washed out new 25’-high diversion dam 12 miles downstream. Inadequate spillway that was able to pass only about 4% of the flood flow at the time of failure; spillway terminated a. Jim Liggett, Cornell University http://roadrunnergold.com/PDF_Files/2006%20Newsletters/2006July-a_web.pdf
Fatalities: - Unknown; most likely +/- 70, although published estimates range from 10-150 		ER 110 ft 0.00 AZ00000 HASSAYAMPA 0 0
KAUFFMAN RESERVOIR PA H Non-Failure 01/01/1892 Seepage/Internal Erosion Piping PA00691-3199 INCREASING LEAKAGE ABOUT HALFWAY UP THE SLOPE. VALVE OPENED AND SEEPAGE STOPPED. No 0 0 0 0 IN 1896 DAM WAS REBUILT JUST D/S OF OLD DAM WITH CONCRETE CORE WALL & FLATTER SLOPES. NO CONCRETE CORE WALL. TWO 12-INCH PIPES THROUGH THE DAM HAD NO COLLARS OR CUTOFFS. L RE S Y 68 ft 413.00 19.00 1896 PA00691 KAUFFMAN RUN 40.7653 -76.2192 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 2 DAYS PA Dam Safety
CLEAR LAKE PA S Failure 05/04/1892 Unknown Overtopping PA00175-3185 FAILED DAM ADDED TO TITUSVILLE FLOOD 7 MI DS. FLOOD CAUSED OIL SPILLS & FIRE DISASTER. No 0 Unknown Unknown Other $1 million to $5 million RECONSTRUCTED IN 1905 AS CONCRETE GRAVITY DAM "10 SIMILAR DAMS IN OIL CREEK HEADWATERS ALSO FAILED" NEARLY ALL OF TITUSVILLE WAS FLOODED & 1/3 OF IT DESTROYED BY FIRE. L CNPG R Y 11 ft 782.00 118.00 1855 PA00175 EAST BRANCH OIL CREEK 41.8247 -79.6856 2008 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 11:30:00 PM 3 DAYS Yes PA Dam Safety
UPPER KITTANNING PA H Non-Failure 05/20/1894 Hydrologic/Flooding Overtopping Erosion PA00530-3178 OVERTOPPING ERODED DOWNSTREAM SLOPE. GULLEYS FORMED UP TO 10-FT DEEP. No 0 0 DAM WAS REPAIRED AFTER THE FLOOD AND REMAINED IN SERVICE. 0 WATER IMPOUNDED UPSTREAM BY SAW MILL RUBBISH MAY HAVE SUDDENLY RELEASED. L RE S Y 45 ft 212.00 12.00 1887 PA00530 BURGOON RUN 40.4969 -78.4789 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY Yes PA Dam Safety
MELZINGAH NY Failure 01/01/1897 Unknown Unknown NY00000-104 No 7
Fatalities: 7 - 		RE 0.00 NY00000 0 0
AUSTIN TX Failure 04/06/1900 Structural Stability Slope Stability TX00000-105 No 7
Fatalities: 7 - Seven to 10 people were killed while watching the flood from a hydroelectric powerhouse atop the dam. Tom Miller Dam now at site. 		0.00 TX00000 0 0
TOM MILLER DAM TX H Non-Failure 04/07/1900 Hydrologic/Flooding Overtopping TX01086-2841 OVERTOPPED L CNPG IHSR Y 85 ft 115404.00 1830.00 1939 TX01086 COLORADO RIVER 30.2941 -97.7864 2005 TCEQ TX DEQ
RANDALLS POND RI Failure 03/11/1901 Unknown Spillway Deficiency RI00000-106 No 0.00 RI00000 0 0
UNNAMED TN Failure 03/28/1902 Unknown Spillway Deficiency TN00000-107 No 0.00 TN00000 0 0
UTICA RESERVOIR NY Failure 09/13/1902 Structural Stability Slope Stability NY00000-108 No 0.00 NY00000 0 0
PRARIE FARM OR L Failure 06/14/1903 Unknown Unknown OR00000-110 No 250
Fatalities: 250 - Called “worst natural disaster in Oregon” 		F RE F N 8 ft 50.00 0.00 1900 OR00000 PRARIE FARM CREEK 44 -121
FORT PITT PA Failure 07/05/1903 Hydrologic/Flooding Overtopping PA00000-109 No 0.00 PA00000 0 0
OAKFORD PARK PA Failure 07/05/1903 Hydrologic/Flooding Overtopping PA00000-111 No 0.00 PA00000 0 0
GREENLICK PA H Failure 07/17/1904 Seepage/Internal Erosion Piping PA00219-3186 LEAK DISCOVERED IN A.M., D/S RESIDENTS WARNED & TOTAL BREACH FAILURE AT 10PM. No 0 DAM RECONSTRUCTED W/ IMPERVIOUS MATERIAL & MASONRY FACING ON U/S SLOPE 500 THIS DAM WAS RECONSTRUCTED AND IN SERVICE UNTIL BREACHED CIRCA 1981 L RE S 60 ft 0.00 1901 PA00219 GREEN LICK RUN 40.0618 -79.31 PADEP 10:00:00 PM 1 DAY Yes PA Dam Safety
WINSTON RESERVOIR NC Failure 11/02/1904 Unknown Unknown NC00000-112 No 9
Fatalities: 9 - Brick reservoir constructed in 1882 had history of seepage. 		OT S 0.00 NC00000 0 0
PENN FOREST PA H Non-Failure 05/13/1905 Seepage/Internal Erosion Sinkhole PA00608-3180 AT INITIAL FILLING, A LARGE 15' DIA. 15' DEEP SINKHOLE DEVELOPED W/POOL 4.5' BELOW SPILLWAY CREST No 0 0 0 0 SINKHOE REPAIRED W /ROCK & EARTH FILL & CONCRETE. GROUTING FAILED. MONITORING W/ PIEZOMETERS. 0 CONTROLLED REFILLING IN 1964 AFTER 275 PIEZOMETERS AND WEIR WERE INSTALLED L RCRE S Y 151 ft 27600.00 462.00 1998 PA00608 WILD CREEK 40.9306 -75.5625 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 4 YEARS PA Dam Safety
HAUSER MT Failure 04/14/1908 Unknown Unknown MT00000-113 No Dam not anchored to bedrock. 70-foot-high steel dam collapsed ~ 2:45 p.m. Had been in operation for only 1 yr. New concrete dam was built at the site in 1911 0.00 MT00000 0 0
HUMPHREYS LAKE MD Failure 01/01/1909 Unknown Unknown MD00000-198 No Dam built in 1743 – powered saw & grist mills. 0.00 MD00000 0 0
ASHLEY MA Failure 01/07/1909 Seepage/Internal Erosion Piping MA00000-114 No Piping during first filling 0.00 MA00000 0 0
FERGUS FALLS HYDRO DAM MN Failure 09/24/1909 Unknown Unknown MN00000-199 No 0.00 MN00000 0 0
KETNER DAM PA L Failure 08/28/1911 Hydrologic/Flooding Overtopping PA00000-3227 HEAVY RAINS DESTROYED CORE WALL & EMBANKMENT DURING CONSTRUCTION. FLOOD WAVE TO JOHNSONBURG. No 0 0 0 0 Roads REBUILT WITH MODIFICATIONS IN 1912, BREACHED DUE TO POOR CONDITION IN 1977. 250 DAM WAS REBUILT & PUT IN SERVICE IN JULY 1912. BREACHED IN NOV. 1977 DUE TO POOR CONDITION. DESTROYED TOWNSHIP HIGHWAY BRIDGE 1000' BELOW THE DAM. P RE S 45 ft 0.00 1912 PA00000 JOHNSON RUN 41.3251 -78.3743 PADEP 1 DAY Yes PA Dam Safety
BAYLESS PULP & PAPER MILL PA Failure 09/30/1911 Unknown Unknown PA00000-200 No 88
Fatalities: 88 - 		0.00 PA00000 0 0
ANSONIA BRASS & COPPER CO. CT Failure 05/28/1912 Unknown Unknown CT00000-201 No 0.00 CT00000 0 0
BROKAW WI Failure 07/23/1912 Unknown Spillway Deficiency WI00000-202 No 0.00 WI00000 0 0
CITY RESERVOIR TN Failure 11/04/1912 Seepage/Internal Erosion Piping TN00000-203 No 0.00 TN00000 0 0
LYMAN AZ Failure 04/14/1915 Seepage/Internal Erosion Piping AZ00000-204 No 8 $500,000 to $1 million
Fatalities: 8 - 		0.00 AZ00000 LITTLE COLORADO 0 0
TOM MILLER DAM TX H Non-Failure 09/01/1915 Hydrologic/Flooding Overtopping TX01086-2840 OVERTOPPED L CNPG IHSR Y 85 ft 115404.00 1830.00 1939 TX01086 COLORADO RIVER 30.2941 -97.7864 2005 TCEQ TX DEQ
LOWER OTAY CA Failure 01/21/1916 Hydrologic/Flooding Overtopping CA00000-206 No 30 Overtopping, Failed on first filling.Inadequate spillway capacity
Fatalities: 30 - 		0.00 CA00000 0 0
SWEETWATER CA Failure 01/27/1916 Unknown Unknown CA00000-115 No The dam at Sweetwater Reservoir fails releasing 13 billion gallons of water.. Dam constructed in 1888 0.00 CA00000 0 0
SWEETWATER MAIN CA H Failure 01/30/1916 Hydrologic/Flooding Overtopping CA00775-3507 Between mid-January to Jan 30th more than 20 inches of rain fell. 10+ inches fell during the last week of January alone. Then, on January 30, 1916, Sweetwater Dam was overtopped by 3.5 feet when 45,000 cfs flowed into the reservoir. The hybrid earth embankments constructed after the 1895 flood to protect the abutments were washed out. Without the protection, the abutments breached. The North abutment breach was 90 feet long and 45 feet deep. The south abutment breah was 20 feet long and 40 feet deep. 8 Railroads $1 million to $5 million 8 people were killed and $3M ($68M today) damage was caused downstream, especially to (Sweetwater Co.) pipelines, railway tracks and electric utility lines U PG ST Y 112 ft 27689.00 936.00 1888 CA00775 SWEETWATER RIVER 32.6921 -117.008 DWR, SAFETY OF DAMS ASDSO Decade Dam Failures Y
WEST BROOK RESERVOIR #3 NY Failure 05/15/1916 Seepage/Internal Erosion Unknown NY00000-116 No Seepage – shallow cutoffs 0.00 NY00000 0 0
LOFTY RESERVOIR PA S Non-Failure 06/10/1916 Structural Stability Slope Stability Sliding PA00681-3196 SLOPE FAILURE CRACKS OBSERVED FOLLOWING DRAWDOWN IN PREPARATION FOR REHABILITATION PROJECT No 0 0 0 0 $1 million to $5 million EXTENSIVE SOIL TESTING AND REDESIGN OF THE REHABILITATION PROJECT. CONSTRUCTION PROJECT IS NEAR COMPLETION AS OF JANUARY 2018. L RE S Y 30 ft 431.00 31.00 1897 PA00681 MESSERS RUN 40.8722 -76.045 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 YEAR PA Dam Safety
UNNAMED NC Failure 07/01/1916 Unknown Unknown NC00000-117 Yes 0.00 NC00000 0 0
JOHN THOMPSONS MILL DAM TN Failure 08/02/1916 Unknown Spillway Deficiency TN00000-118 No 26 24-28 lives lost in flood, # related to failure unknown. Many houses, mills, other buldings, crops, and livestock destroyed, railroad damaged. > $30,000 in property damage (possibly $50,000 to $100,000). The dam broke following 9"" of rainfall in 5 hours,
Fatalities: 26 - 		0.00 TN00000 BARREN CREEK 0 0
UNNAMED WV Failure 08/09/1916 Unknown Unknown WV00000-119 No 60
Fatalities: 60 - 60-75 from flood (unknown if related to failure) 		0.00 WV00000 0 0
UNNAMED WV Failure 08/09/1916 Unknown Spillway Deficiency WV00000-120 No 60
Fatalities: 60 - 60-75 from flood (unknown if related to failure) 		0.00 WV00000 0 0
UNNAMED WV Failure 08/09/1916 Unknown Spillway Deficiency WV00000-121 No 44 $500,000 to $1 million
Fatalities: 44 - 44-60 from flood (unknown if related to failure) 		0.00 WV00000 0 0
LAKE TOXAWAY NC Failure 08/13/1916 Seepage/Internal Erosion Piping NC00000-122 No 0.00 NC00000 0 0
LINDEN LAKE PA S Non-Failure 02/26/1917 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity PA00000-3229 AFTER HEAVY RAINS, 60' WIDE OVERTOPPING FLOW UP TO 1.5 FOOT DEPTH. No 0 0 0 0 Roads Unknown FAYETTE CO. EMERGENCY MGT. WAS NOTIFIED; CONES SET OUT TO CLOSE ROAD. SIMILAR OVERTOPPING AT THE DAM ALSO OCCURRED ON MARCH 4, 2015. 8 INCH DEPTH OF OVERTOPPING AT DOWNSTREAM LINDEN HALL ROAD. P RE IR 11 ft 0.00 1955 PA00000 TR YOUGHIOGHENY RIVER 40.0407 -79.4201 PADEP 8:00:00 AM 1 DAY No PA Dam Safety
MAMMOTH DAM UT H Failure 06/24/1917 Other Overtopping UT00000-205 Dam overtopped scouring away the downstream shell and toppling of the center concrete wall. 0 UNKNOWN UNKNOWN UNKNOWN Railroads $1 million to $5 million 11000 Faulty Construction. earth-fill over a buttressed concrete core; designed to be heightened in 10-foot steps; by late 1915, its height had reached 67 feet
Denver & Rio Grande Railroad, Roads, Bridges, other utilities damaged
https://damfailures.org/case-study/mammoth-dam-utah-1917/ 		P RECN I 67 ft 0.00 0 UT00000 GOOSEBERRY CREEK 39.7157 -111.299 YES
BOXLEY BURST WA Failure 12/01/1918 Seepage/Internal Erosion Excessive/Increased Seepage WA00000-123 No precise date unknown. Excessive seepage through glacial moraine abutment caused mud flow about 1 mi. from reservoir. Destroyed RR line & village of Eastwick. MS 0.00 WA00000 0 0
SALTVILLE MUCK OR MATHIESON ALAKALI WORKS VA Failure 12/24/1924 Unknown Unknown VA00000-217 No 19 “Palmertown Tragedy…tons of waste raced through the tiny community of Palmertown. Pieces of the dam and boulders of muck blocked the North Fork of the Holston River, sending the flood upstream into the even smaller community of Chinch Row.”
Fatalities: 19 - 		RE T 100 ft 0.00 VA00000 HOLSTON 0 0
SHEFFIELD CA Failure 06/01/1925 Seismic Other CA00000-188 the dam failed by liquefaction, a fact borne out by the following paper:
https://cedb.asce.org/CEDBsearch/record.jsp?dockey=0016249 		No Precise date unknown. 25’-high hydraulic fill dam, 7 miles from the epicenter of a 6.3 Richter magnitude quake. The embankment & foundation were comprised primarily of loose silty sand, & seepage had saturated the foundation & lower part of the fill, res
https://projects.eri.ucsb.edu/sb_eqs/1925/sheffield.html
https://cedb.asce.org/CEDBsearch/record.jsp?dockey=0016249 		HF 25 ft 92.00 0.00 1917 CA00000 0 0 Yes
ST. FRANCIS CA H Failure 03/12/1928 Structural Stability Foundation Deficiency CA00000-189 There was poor foundation material and sliding planes on the Left abutment. At the time of the incident there was also concerns with the congolomerate on the right abutment but most experts now belive the failure iniciated on the left. No 600 $5 million to $10 million 38000 23,500 acres of farmland flooded. Most likely cause: instability of underlying soil,
Fatalities: 600 - Over 600 killed. 		S N 205 ft 38000.00 0.00 1926 CA00000 0 0 Yes Damfailures.org, Floodpath by Jon Wilkman
CLEAR LAKE PA S Failure 05/23/1928 Hydrologic/Flooding Overtopping PA00175-3184 BREACHED 30 FT WIDE & 7 FT DEEP FROM OVERTOPPING LEFT ABUTMENT. No 1 0 0 0 Roads REPAIRED BREACH AND RAISED EARTHFILL ABUTMENTS NEWSPAPER REPORTED 1 DEATH OF 15-YR-OLD BOY WHO WAS SWIMMING D/S; BODY NOT FOUND. L CNPG R Y 11 ft 782.00 118.00 1855 PA00175 EAST BRANCH OIL CREEK 41.8247 -79.6856 2008 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety
EASTWICK RR FILL WA Failure 02/07/1932 Hydrologic/Flooding Overtopping WA00000-190 No 7 Village of Earthwick destroyed. Blockage of culvert by slide caused RR fill to back up water and fail.
Fatalities: 7 - 		0.00 WA00000 0 0
LOUP LOUP WA Failure 04/01/1938 Unknown Unknown WA00000-191 No Precise date unknown. 50 foot high hydraulic fill dam failed when emergency spillway was undercut during a flood. 75 people left homeless. HF 0.00 WA00000 0 0
DIXIE LAKE DAM TX S Non-Failure 12/23/1939 Hydrologic/Flooding Overtopping TX00329-2837 OVERTOPPED P RE R N 17 ft 1420.00 122.00 1943 TX00329 LITTLE SIXMILE CREEK 32.1281 -94.3657 TCEQ TX DEQ
WEWOKA OK Failure 04/13/1945 Unknown Unknown OK00000-192 No 8 80 April 13-14: 14.6 inches of rain at Seminole. 80 people forced from homes, town under 4'' of water
Fatalities: 8 - estimate 		0.00 OK00000 0 0
LAKE FRYER DAM TX H Non-Failure 05/16/1947 Unknown Spillway Deficiency TX03890-2835 SPWY COLLAPSE L RE R N 40 ft 2792.00 90.00 1939 TX03890 WOLF CREEK 36.2201 -100.64 1957 TCEQ TX DEQ
PRARIE FARM OR L Failure 01/01/1948 Unknown Unknown OR00000-193 No 20000 $50 million to $100 million Levee failure destroyed city (never rebuilt; ~20,000 displaced); damage estimated at $100 M. F RE F N 8 ft 50.00 0.00 1900 OR00000 PRARIE FARM CREEK 44 -121
LAKE DAWN WA Failure 02/01/1950 Hydrologic/Flooding Overtopping WA00000-194 No None Precise date unknown. RE 0.00 WA00000 0 0
VAUX DAMS MT Failure 03/26/1951 Unknown Unknown MT00000-195 No
Fatalities: - Foell family 		0.00 MT00000 0 0
NO 1 PA L Failure 07/06/1952 Hydrologic/Flooding Spillway Chute Failure PA01569-3219 TIMBER CRIB SPILLWAY FAILED. 5 FOOT DROP IN THE POOL LEVEL DESTROYED RECREATIONAL USE. No 0 0 0 0 A CAMPGROUND ORGANIZATION REBUILT THE DAM IN 1953 WITH A 72' WIDE CONCRETE SPILLWAY. P RE O NR 8 ft 334.00 0.00 PA01569 TOBYHANNA CREEK 41.1772 -75.4131 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
HARRIS POND RI Failure 01/01/1955 Unknown Unknown RI00000-196 No 1500 > 1,500 evacuated; Woonsocket flooded. Failure of earthen embankment; disaster inspired city’s current flood control system. RE 0.00 RI00000 BLACKSTONE 0 0
NO 1 PA L Failure 08/20/1955 Hydrologic/Flooding Unknown PA01569-3218 BREACH OF NEWER DAM DURING HURRICANE DIANE Diane No 0 0 0 0 NO FUNDING WAS OBTAINED TO REBUILD THE DAM AS OF 1977. RESIDENTS COMPLAINED TO THE STATE. THERE IS NOW A DUMPED ROCK DAM FURTHER UPSTREAM, MAINTAINING THE IMPOUNDMENT. P RE O NR 8 ft 334.00 0.00 PA01569 TOBYHANNA CREEK 41.1772 -75.4131 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 2:00:00 AM PA Dam Safety
ALAMO ARROYO WS SCS SITE 2 DAM TX H Non-Failure 01/01/1960 Seepage/Internal Erosion Piping TX01949-2834 PIPING L RE CI N 48 ft 6144.00 30.00 1960 TX01949 ALAMO ARROYO 31.4051 -105.818 N TX DEQ
ELECTRIC LIGHT POND NY Failure 01/01/1960 Unknown Under Investigation NY00000-197 failure No 1
Fatalities: 1 - 		0.00 NY00000 1 1
WACO LAKE TX H Non-Failure 10/10/1961 Structural Stability Sliding TX00016-2832 SLIDING F RE SRC Y 140 ft 969000.00 7270.00 1965 TX00016 BOSQUE RIVER 31.6 -97.2167 N TX DEQ
SPAULDING POND, MOHEGAN PARK CT Failure 03/06/1963 Unknown Unknown CT00000-207 No $5 million to $10 million Over $6 million in damages. 0.00 CT00000 0 0
LITTLE DEER CREEK UT Failure 06/16/1963 Unknown Unknown UT00000-208 No 1 Summer cabins damaged
Fatalities: 1 - 		0.00 UT00000 0 0
TYLER STATE PARK TX Failure 09/12/1963 Unknown Unknown TX00000-216 No 1 Faulty Construction. Lake emptied, sending water across a vast area. No injuries, one home damaged. Officials at the time determined the dam failed due to a large drain being placed in the middle of the dam. The dam was replaced. In 2009, the dam needs costly repairs again de 0.00 TX00000 0 0
BALDWIN HILLS CA Failure 12/14/1963 Seepage/Internal Erosion Piping CA00000-209 No 5 16500 Destroyed 65 houses; miles of streets, waterpipes, sewers & gas lines, damaged hundreds of houses & apartments. Water supply for Los Angeles. 232’ high, 650’ long dam. Impoundment: 20 acres, 70’ deep
Fatalities: 5 - Advance warning enabled evac of approx 16,500; 27 injured 		RE 232 ft 0.00 CA00000 0 0
SWIFT IRRIGATION MT Failure 06/08/1964 Unknown Unknown MT00000-210 No 19
Fatalities: 19 - 		0.00 MT00000 MARIAS R. TRIBUTARY 0 0
LOWER TWO MEDICINE MT Failure 06/08/1964 Unknown Unknown MT00000-211 No 9 NW MT
Fatalities: 9 - 		0.00 MT00000 0 0
LOWER HELL HOLE CA Failure 12/22/1964 Unknown Unknown CA00000-212 No over $100 million approx 100 miles east of Sacramento. 200’ high section of the embankment failed due to erosion resulting from record rains during construction. 30,000 af flood destroyed 2 suspension bridges and 1 steel girder State highway bridge. $160M in lawsuits filed ER 410 ft 0.00 CA00000 RUBICON 0 0
WINDTHORST LAKE DAM TX S Non-Failure 05/01/1965 Seepage/Internal Erosion Piping TX02870-2831 PIPING L RE S Y 32 ft 3268.00 0.00 1964 TX02870 EAST-LITTLE POST OAK CREEK 33.5459 -98.3938 1985 TCEQ TX DEQ
FONTENELLE WY H Non-Failure 09/04/1965 Seepage/Internal Erosion Piping WY01389-3506 Fontenelle Dam nearly failed on first filling in 1965. The embankment materials were placed directly over open joints in the right abutment. After a large spring runoff event, seepage from the reservoir worked its way through these joints and into the right abutment of the embankment dam. Massive sloughing occurred and within 12 hours 10,000 cubic yards of material were eroded away. Unknown 0 Other The engineers opened the large outlet works full open lowering the reservoir 4 feet per day. This was the only thing that saved the dam from failing Flooding downstream with outlet works at full capacity. F RE FHRS Y 139 ft 405160.00 8058.00 1963 WY01389 GREEN RIVER 42.0286 -107.867 1989 SEO 7:00 PM 12 Days Yes ASDSO Decade Dam Series
RIPS LAKE DAM TX S Non-Failure 09/22/1967 Hydrologic/Flooding Overtopping TX03169-2830 OVERTOPPED P RE S NR 11 ft 106.00 15.00 1968 TX03169 OAK HOLLOW 28.9694 -98.4431 N TX DEQ
EAGLE MOUNTAIN DAM TX H Non-Failure 12/01/1967 Structural Stability Slope Stability TX00779-2829 LIQUIFACTION DURING EXCAVATION S RE IS Y 85 ft 680335.00 6160.00 1932 TX00779 WEST FORK TRINITY RIVER 32.8739 -97.461 TCEQ TX DEQ
NORTH STAR SAND & GRAVEL DAMS WA Failure 12/01/1967 Hydrologic/Flooding Overtopping WA00000-213 No Precise date unknown. 40 foot high dam washed out due to lack of spillway. 25 foot high dam rebuilt, also failed. 40 ft 0.00 WA00000 0 0
LEE LAKE MA Failure 03/24/1968 Unknown Unknown MA00000-214 No 2 20 1mfg. plant damaged or destroyed
Fatalities: 2 - 		0.00 MA00000 0 0
LAKE LONDA LYNN DAM TX H Non-Failure 05/06/1969 Hydrologic/Flooding Overtopping TX00034-2826 OVERTOPPED P RE R N 23 ft 905.00 53.00 1966 TX00034 SALLY CREEK 30.5595 -94.8821 2009 TCEQ TX DEQ
LAKE DONNA DAM TX L Non-Failure 05/06/1969 Hydrologic/Flooding Overtopping TX00036-2827 OVERTOPPED P RE R NR 21 ft 145.00 5.00 1963 TX00036 TR-WEST FORK DOUBLE BRANCH 30.6864 -94.756 TCEQ TX DEQ
LAKE MARK DAM TX L Non-Failure 05/06/1969 Hydrologic/Flooding Overtopping TX00037-2828 OVERTOPPED P RE R NR 23 ft 290.00 10.00 1964 TX00037 TR-WEST FORK DOUBLE BRANCH 30.6749 -94.7424 TCEQ TX DEQ
VICTOR BRAUNIG DAM TX H Non-Failure 12/21/1969 Structural Stability Cracking Sliding TX01432-2825 CRACKS AND SLIDES L RE HRO Y 76 ft 32324.00 1350.00 1963 TX01432 ARROYO SECO 29.2461 -98.3645 TCEQ TX DEQ
ALAMO ARROYO WS SCS SITE 2 DAM TX H Non-Failure 01/01/1970 Seepage/Internal Erosion Piping TX01949-2824 PIPING L RE CI N 48 ft 6144.00 30.00 1960 TX01949 ALAMO ARROYO 31.4051 -105.818 N TX DEQ
PILLAR ROCK WA Failure 01/01/1970 Hydrologic/Flooding Overtopping WA00000-215 No 3 Precise date unknown, fish cannery destroyed. Logging roadfill culvert blocked by debris, overtopped and failed, caused 25 foot high concrete gravity dam to fail.. PG 25 ft 0.00 WA00000 0 0
COLEMAN DAM TX H Non-Failure 01/01/1971 Structural Stability Cracking TX02152-2823 SETTLEMENT AND CRACKING L RE ISRO Y 90 ft 91680.00 1886.00 1966 TX02152 JIM NED CREEK 32.0314 -99.4651 TCEQ TX DEQ
SAN FERNANDO CA Failure 02/09/1971 Seismic Unknown CA00000-124 Yes 80000 Incident. 142’-high, 2,100’-long hydraulic fill dam constructed 1912-1915; Quake caused slide in upstream slope that lowered the crest ~ 30’; reservoir drawn down over 3 days. HF 142 ft 0.00 CA00000 0 0
SID WHITE WA Failure 05/01/1971 Seepage/Internal Erosion Piping WA00000-125 No Seepage thru animal burrows. Earthen dam failed, causing second dam to fail and dump debris into town of Riverside. 0.00 WA00000 0 0
CANYON LAKE SD Failure 01/01/1972 Hydrologic/Flooding Overtopping SD00000-128 No 33 $50 million to $100 million 237-238 killed - 33 from dam failure? $60-164 million in damages; 3,000 injured. “The safety inspection and repair program was spurred by the collapse of a dam built & operated by the city near Rapid City, S.D., in 1972. More than 200 persons died and d
Fatalities: 33 - 		RE 20 ft 0.00 SD00000 0 0
ANZALDUAS DIVERSION TX H Non-Failure 02/01/1972 Malfunction of Equipment/Gate Gate/Valve Failure TX07036-2822 GATE FAILURE F CN CI Y 23 ft 16400.00 1287.00 1960 TX07036 RIO GRANDE 26.137 -98.334 N TX DEQ
BUFFALO CREEK WV Failure 02/26/1972 Unknown Unknown WV00000-126 No 125 1084 over $100 million
Fatalities: 125 - 		0.00 WV00000 0 0
LAKE O HILLS AK Failure 04/29/1972 Seepage/Internal Erosion Piping AK00000-127 No 1 piping failure at a low level outlet made of 55 gallon drums welded end to end
Fatalities: 1 - 10-year-old boy 		0.00 AK00000 0 0
BARCROFT VA Failure 06/21/1972 Hydrologic/Flooding Overtopping VA00000-129 No Stuck gates during tropical storm Agnes. 0.00 VA00000 0 0
BART LAKE DAM TX L Non-Failure 06/13/1973 Hydrologic/Flooding Overtopping TX00121-2819 OVERTOPPED P RE R NR 20 ft 214.00 8.00 1955 TX00121 MCRAE CREEK 30.3715 -95.3387 N TX DEQ
MCRAE DAM TX H Non-Failure 06/13/1973 Hydrologic/Flooding Overtopping TX00135-2820 OVERTOPPED P RE R Y 20 ft 305.00 17.00 1960 TX00135 MCRAE CREEK 30.3845 -95.338 TCEQ TX DEQ
SPRING LAKE DAM TX H Non-Failure 06/13/1973 Hydrologic/Flooding Overtopping TX00124-2821 OVERTOPPED P RE R Y 23 ft 255.00 14.00 1952 TX00124 TR-CANEY CREEK 30.4049 -95.3824 TCEQ TX DEQ
MIKE HORSE MT Failure 01/01/1975 Unknown Unknown MT00000-130 No 1975 flood washed thousands of tons of mine tailings downstream & killed most of the aquatic life in the upper 10 miles of the Blackfoot River 0.00 MT00000 0 0
NEW-FOUND CREEK DAM (BEAR WALLOW) NC Failure 02/22/1976 Unknown Unknown NC00000-131 No 4
Fatalities: 4 - family of 4 		0.00 NC00000 0 0
TETON ID Failure 06/05/1976 Unknown Unknown ID00000-132 Yes 11 over $100 million
Fatalities: 11 - 		0.00 ID00000 0 0 USBR
RIVERWOOD ACRES DAM TX S Non-Failure 04/19/1977 Hydrologic/Flooding Overtopping TX09273-2818 OVERTOPPED P RE R N 13 ft 22.00 0.00 1800 TX09273 TR-COLORADO RIVER 30.1242 -97.3424 N TX DEQ
SANDY RUN, 5 OTHERS PA Failure 07/01/1977 Unknown Unknown PA00000-133 No 5 Precise date unknown.
Fatalities: 5 - 		0.00 PA00000 0 0
LAUREL RUN PA Failure 07/01/1977 Unknown Unknown PA00000-134 No 40 25 $5 million to $10 million Precise date unknown.
Fatalities: 40 - 		RE 42 ft 0.00 PA00000 0 0
KELLY BARNES GA H Failure 11/06/1977 Unknown Unknown GA00000-135 There was little maintance at the dam and there had been intense rain for several days. Could have overtopped but it is unknown. No 39 $25 million to $50 million 410 Damfailures.org, https://www2.usgs.gov/water/southatlantic/ga/flood/toccoa/index.html
Fatalities: 39 - 		P RE R N 38 ft 410.00 0.00 GA00000 Toccoa Creek 0 0 Y
MYRON ISABEL CO Failure 01/01/1978 Seepage/Internal Erosion Piping CO00000-136 No insignificant damages. Piping due to tree roots & animal burrows. 0.00 CO00000 0 0
MCCARTY LAKE DAM TX S Non-Failure 08/04/1978 Hydrologic/Flooding Overtopping TX03117-2816 OVERTOPPED L RE S Y 50 ft 6696.00 263.00 1942 TX03117 SALT PRONG HUBBARD CREEK 32.6582 -99.3597 1980 TCEQ TX DEQ
SWIMMING POOL NY Failure 01/01/1979 Unknown Unknown NY00000-137 No 4
Fatalities: 4 - 		0.00 NY00000 0 0
UNITED NUCLEAR CORP NM Failure 07/01/1979 Unknown Unknown NM00000-138 No Precise date unknown. Uranium tailings - 93 million gallons of liquid contaminated with low-level radiation & ~ 1100 T of solid waste spread ~ 100 miles downstream. UNC shut down operations April 1982. 0.00 NM00000 0 0
PROSPECT VALLEY & LORD RESERVOIR DAMS CO Failure 02/10/1980 Unknown Unknown CO00000-139 No 0.00 CO00000 0 0
H & H FEED LOT DAM TX L Non-Failure 09/01/1980 Hydrologic/Flooding Overtopping TX02731-2811 OVERTOPPED P RE O NR 35 ft 300.00 16.00 1960 TX02731 COTTONWOOD CREEK 32.4814 -100.595 N TX DEQ
TYRON TAILINGS DAM NO. 3 NM Failure 10/13/1980 Unknown Unknown NM00000-140 No 2.5 million cu yds tailings spilt into Mangas Creek. 0.00 NM00000 0 0
LAKE GILEAD DAM TX L Non-Failure 05/16/1981 Unknown Spillway Deficiency TX05092-2810 SPWY FAILURE P RE IR NR 19 ft 1365.00 84.00 1982 TX05092 MILL CREEK 32.763 -95.2558 TCEQ TX DEQ
MADRONA RANCH LAKE DAM TX S Non-Failure 06/14/1981 Hydrologic/Flooding Overtopping TX05851-2809 OVERTOPPED P RE R N 30 ft 140.00 0.00 1968 TX05851 RED BLUFF CREEK 29.7406 -98.863 TCEQ TX DEQ
OLD MILL DAM TX L Non-Failure 06/17/1981 Unknown Unknown TX03446-2808 COLLAPSED L CN IS NR 15 ft 108.00 18.00 1963 TX03446 NORTH BOSQUE RIVER 31.795 -97.5765 N TX DEQ
LAKE PENNINGTON DAM TX L Non-Failure 09/01/1981 Hydrologic/Flooding Overtopping TX00505-2807 OVERTOPPED P RE NR 28 ft 550.00 30.00 1956 TX00505 LOUISVILLE CREEK 31.1743 -95.1855 TCEQ TX DEQ
LAKE DE LAFOSSE DAM TX S Non-Failure 10/13/1981 Hydrologic/Flooding Overtopping TX03114-2805 OVERTOPPED P RE R Y 24 ft 1187.00 0.00 1925 TX03114 DRY BRANCH 32.7332 -99.1085 1982 TCEQ TX DEQ
COAL WASTE IMPOUNDMENT KY Failure 12/01/1981 Unknown Unknown KY00000-187 No 1 precise date unknown.
Fatalities: 1 - Nellie Woolums 		0.00 KY00000 0 0
SPRING LAKE DAM TX H Non-Failure 04/01/1982 Unknown Spillway Deficiency TX00124-2804 SERVICE SPWY P RE R Y 23 ft 255.00 14.00 1952 TX00124 TR-CANEY CREEK 30.4049 -95.3824 TCEQ TX DEQ
HONEY GROVE CITY LAKE DAM TX L Non-Failure 05/13/1982 Deterioration or Poor Condition Animal Activity TX00422-2803 BEAVER DEN L RE R NR 23 ft 450.00 37.00 1902 TX00422 TR-HONEY GROVE CREEK 33.6029 -95.9054 TCEQ TX DEQ
MEADOWS LAKES EAST LAKE DAM TX H Non-Failure 05/28/1982 Unknown Spillway Deficiency TX05790-2802 SPWY FAILED P RE R N 19 ft 129.00 0.00 1959 TX05790 TR-BIG FOSSIL CREEK 32.8332 -97.2478 TCEQ TX DEQ
GRACE LAKE DAM NO 1 TX L Non-Failure 06/01/1982 Unknown Spillway Deficiency TX03192-2801 E.S. FAILED P RE S NR 39 ft 577.00 27.00 1961 TX03192 TR-WEST FORK TRINITY RIVER 33.292 -97.9597 TCEQ TX DEQ
CANTON OLD CITY LAKE DAM TX H Non-Failure 12/03/1982 Deterioration or Poor Condition Animal Activity TX04400-2800 ANIMAL BURROWS L RE R Y 18 ft 220.00 17.00 1930 TX04400 TR-DRY CREEK 32.5584 -95.872 1984 TCEQ TX DEQ
LAKELAND LAKE DAM TX H Non-Failure 04/12/1983 Structural Stability Sliding TX04778-2799 SLIDE L RE R N 9 ft 192.00 22.00 1925 TX04778 OFF CH-HAGGERTY BRANCH 30.1906 -95.1764 N TX DEQ
CADE LAKE NUMBER 3 DAM TX S Non-Failure 03/27/1984 Unknown Spillway Deficiency TX04210-2798 S.S. FAILED L RE R N 20 ft 584.00 0.00 1972 TX04210 SECOND DAVIDSON CREEK 30.5039 -96.7656 TCEQ TX DEQ
LEAVITT BRANCH (PA-463) PA H Non-Failure 04/18/1984 Seepage/Internal Erosion Sinkhole PA00814-3221 12' DIA. 3' DEEP SINKHOLE OBSERVED IN DRY DAM FOLLOWING HIGH WATER EVENT No 0 0 0 A BACKHOE INVESTIGATION FOUND MORE VOIDS. DAM WAS BREACHED AND THE EMBANKMENT RECONSTRUCTED. 0 PIPING WAS ATTRIBUTED TO NON-PLASTIC FILL, GEOLOGY AT THE ABUTMENTS, AND INADEQUATE FILTER DRAINS. L RE C Y 90 ft 1544.00 0.00 1976 PA00814 LEAVITT BRANCH BRODHEAD CREEK 41.2081 -75.2475 2008 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
MENNO DAM SD H Failure 06/12/1984 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity SD00026-3415 Heavy rainfall on the evening of June 11, 1984 along with high reservoir levels from heavy rain in the days prior caused the dam to overtop and fail. 0 unknown 1 1 Other The hog barn and approximately 450 hogs, farmstead buildings, and farm equipment associated with the downstream farm house. There was a court case over damages (Heer vs the State of South Dakota) that made it to the South Dakota Supreme Court which awarded the Heers approximately $650,000 in damages. Dam was reconstructed about 400 feet downstream of original dam site -ground breaking April 1995, dedication June 1996, and first flow through spillway March 1997. S RE R Y 53 ft 2050.00 48.00 1935 SD00026 JAMES RIVER TRIBUTARY 43.2617 -97.6167 1996 DENR 7:00 SD Dam Safety
BASS HAVEN LAKE DAM TX L Failure 08/17/1984 Unknown Unknown TX05119-2797 BREACHED P RE T NR 30 ft 750.00 35.00 1974 TX05119 TR-COON CREEK 32.0011 -95.9015 1986 TCEQ TX DEQ
KERRVILLE PONDING DAM TX S Non-Failure 12/31/1984 Hydrologic/Flooding Overtopping TX04650-2795 OVERTOPPED L REOT ISR Y 21 ft 2499.00 106.00 1980 TX04650 GUADALUPE RIVER 30.0535 -99.165 TCEQ TX DEQ
HATCHERY LAKE DAM TX L Non-Failure 11/11/1985 Unknown Spillway Chute Failure TX02948-2794 SPWY COLLAPSE S RE O NR 24 ft 135.00 0.00 1932 TX02948 HARMON CREEK 30.7408 -95.4748 TCEQ TX DEQ
BARNEY M DAVIS COOLING RESERVOIR TX L Non-Failure 05/08/1986 Seepage/Internal Erosion Piping TX01551-2793 PIPING P RE O NR 20 ft 11400.00 0.00 1973 TX01551 OFF CH-OSO CREEK 27.6267 -97.3483 TCEQ TX DEQ
BEARFOOT LAKE DAM TX H Non-Failure 06/26/1986 Hydrologic/Flooding Overtopping TX03916-2792 OVERTOPPING P RE R N 27 ft 3207.00 0.00 1964 TX03916 MILL CREEK 30.4819 -94.7734 N TX DEQ
COMANCHE TRAIL LAKE DAM TX H Non-Failure 08/30/1986 Hydrologic/Flooding Overtopping TX03799-2791 OVERTOPPED L RE R Y 19 ft 520.00 22.00 1914 TX03799 BIG SPRING DRAW 32.2249 -101.471 1988 TCEQ TX DEQ
HURST CREEK DAM NO 1 TX L Non-Failure 05/29/1987 Hydrologic/Flooding Overtopping TX06337-2790 OVERTOPPED P RE R NR 24 ft 87.00 0.00 1968 TX06337 HURST CREEK 30.3527 -97.9867 TCEQ TX DEQ
LAKE EANES DAM TX S Non-Failure 06/01/1988 Hydrologic/Flooding Overtopping TX03492-2788 OVERTOPPED P RE I Y 35 ft 2215.00 124.00 1926 TX03492 MERCER CREEK 31.8528 -98.6182 1988 TCEQ TX DEQ
BEARFOOT LAKE DAM TX H Non-Failure 01/01/1989 Hydrologic/Flooding Overtopping TX03916-2787 OVERTOPPING P RE R N 27 ft 3207.00 0.00 1964 TX03916 MILL CREEK 30.4819 -94.7734 N TX DEQ
HARRIS BACK LAKE DAM TX H Non-Failure 03/29/1989 Seepage/Internal Erosion Piping TX04877-2783 INTERNAL EROSION P RE R N 17 ft 214.00 15.00 1900 TX04877 TR-PARKER CREEK 32.5574 -94.3443 2006 TCEQ TX DEQ
HIGHWAY LAKE DAM A TX S Non-Failure 03/29/1989 Hydrologic/Flooding Overtopping TX03575-2784 OVERTOPPING P RE R Y 12 ft 75.00 4.00 1925 TX03575 TR-CLARKS CREEK 32.5065 -94.6162 1989 TCEQ TX DEQ
RUSK ORE MINE DAM TX L Non-Failure 03/29/1989 Hydrologic/Flooding Overtopping TX00589-2785 OVERTOPPING, DID NOT BREACH L RE R NR 23 ft 680.00 0.00 1953 TX00589 TR-BEANS CREEK 31.8003 -95.1967 TCEQ TX DEQ
NIX LAKE DAM TX L Non-Failure 03/29/1989 Hydrologic/Flooding Overtopping TX03546-2786 OVERTOPPING P RE R NR 23 ft 837.00 135.00 1940 TX03546 WASSON BRANCH 32.2498 -94.6545 N TX DEQ
CHARLES FROST DAM TX L Non-Failure 05/05/1989 Hydrologic/Flooding Overtopping TX06443-2782 OVERTOPPED P RE NR 25 ft 0.00 1800 TX06443 PATRICK CREEK 32.7257 -97.8913 N TX DEQ
RAYMOND BLAIR DAM TX S Non-Failure 05/08/1989 Seepage/Internal Erosion Piping TX06450-2781 INTERNAL EROSION P RE O N 27 ft 80.00 1.00 1986 TX06450 LITTLE SILVER CREEK 32.8258 -97.6353 TCEQ TX DEQ
WILLOW LAKE DAM TX L Non-Failure 06/04/1989 Hydrologic/Flooding Overtopping TX03541-2779 OVERTOPPING L RE O NR 19 ft 638.00 46.00 1914 TX03541 SHAWNEE CREEK 32.15 -94.7842 N TX DEQ
PINO LAKE DAM TX S Non-Failure 06/15/1989 Hydrologic/Flooding Overtopping TX03480-2778 OVERTOPPING P RE N 33 ft 250.00 22.00 1968 TX03480 TR-SABANA RIVER 32.1681 -98.6749 2005 TCEQ TX DEQ
LOST CREEK DAM TX S Non-Failure 01/01/1990 Structural Stability Sliding TX06399-2776 LARGE SLIDE L RE S Y 99 ft 21831.00 0.00 1991 TX06399 LOST CREEK 33.2404 -98.1203 TCEQ TX DEQ
CADE LAKE NUMBER 3 DAM TX S Non-Failure 04/25/1990 Unknown Spillway Deficiency TX04210-2773 S.S. FAILED L RE R N 20 ft 584.00 0.00 1972 TX04210 SECOND DAVIDSON CREEK 30.5039 -96.7656 TCEQ TX DEQ
NABORS LAKE DAM TX L Non-Failure 04/25/1990 Hydrologic/Flooding Overtopping TX03465-2774 OVERTOPPING P RE R NR 33 ft 595.00 41.00 1947 TX03465 FADE CREEK 32.123 -98.6038 1991 TCEQ TX DEQ
WHITE OAK DAM TX L Non-Failure 07/18/1990 Unknown Spillway Erosion/Head Cutting TX03294-2772 E.S. BREACH P RE R NR 21 ft 5600.00 212.00 1970 TX03294 LICK CREEK 33.2873 -95.1451 2003 TCEQ TX DEQ
HARALSON LAKE DAM TX L Non-Failure 01/01/1991 Unknown Spillway Deficiency TX00517-2771 SPWY FAILURE P RE P NR 16 ft 130.00 13.00 1957 TX00517 TR-VILLAGE CREEK 30.9274 -95.382 N TX DEQ
BUESCHER STATE PARK LAKE DAM TX S Non-Failure 01/28/1991 Seepage/Internal Erosion Piping TX02711-2770 PIPING S RE R N 26 ft 250.00 0.00 1936 TX02711 HUNT BRANCH 30.0421 -97.1584 1993 TCEQ TX DEQ
LAKE DOWNS DAM TX H Non-Failure 02/01/1991 Unknown Spillway Deficiency TX00038-2769 SPWY WASHOUT P RE R N 26 ft 65.00 3.00 1963 TX00038 TR-BIG SANDY CREEK 30.6944 -94.74 1983 TCEQ TX DEQ
LAKE CENTER DAM TX S Non-Failure 08/04/1991 Unknown Spillway Deficiency TX00309-2768 SPWY COLLAPSE L RE S Y 17 ft 1825.00 93.00 1953 TX00309 MILL CREEK 31.7383 -94.16 1993 TCEQ TX DEQ
CADE LAKE NUMBER 3 DAM TX S Non-Failure 12/01/1991 Unknown Spillway Deficiency TX04210-2767 S.S. FAILED L RE R N 20 ft 584.00 0.00 1972 TX04210 SECOND DAVIDSON CREEK 30.5039 -96.7656 TCEQ TX DEQ
JDM LAKE DAM TX L Non-Failure 01/10/1992 Deterioration or Poor Condition Spillway Pipe Failure TX00171-2766 CONDUIT HOLE P RE RP NR 30 ft 1500.00 88.00 1953 TX00171 WOLF CREEK 32.0231 -95.7178 2012 TCEQ TX DEQ
SPRING LAKE DAM TX H Non-Failure 10/09/1992 Unknown Spillway Deficiency TX00124-2765 SERVICE SPWY P RE R Y 23 ft 255.00 14.00 1952 TX00124 TR-CANEY CREEK 30.4049 -95.3824 TCEQ TX DEQ
BLACKBURN LAKE DAM TX L Non-Failure 01/01/1993 Unknown Spillway Deficiency TX00970-2764 SPWY FAILURE P RE R NR 18 ft 137.00 12.00 1950 TX00970 CONNER SPRING BRANCH 31.3741 -94.8517 TCEQ TX DEQ
LAKE ROMAN DAM TX L Non-Failure 06/20/1993 Hydrologic/Flooding Overtopping TX03528-2760 OVERTOPPING P RE P NR 23 ft 300.00 26.00 1935 TX03528 TR-BEARD BRANCH 32.1947 -94.6472 TCEQ TX DEQ
PIPES DAM NO 1 TX S Non-Failure 06/20/1993 Hydrologic/Flooding Overtopping TX09292-2761 OVERTOPPING P RE P N 17 ft 30.00 4.00 1953 TX09292 TR-BEANS CREEK 31.8054 -95.1914 TCEQ TX DEQ
RUSK ORE MINE DAM TX L Non-Failure 06/20/1993 Hydrologic/Flooding Overtopping TX00589-2762 OVERTOPPING, DID NOT BREACH L RE R NR 23 ft 680.00 0.00 1953 TX00589 TR-BEANS CREEK 31.8003 -95.1967 TCEQ TX DEQ
LAKE MARY DAM TX L Non-Failure 06/21/1993 Structural Stability Erosion TX04862-2759 EROSION D/S SLP P RE R NR 28 ft 370.00 21.00 1945 TX04862 RUCKER BRANCH 31.6945 -95.5461 TCEQ TX DEQ
ARROWHEAD LAKE PA H Failure 04/26/1994 Seepage/Internal Erosion Piping PA00780-3220 A "BLOWOUT" UNDER THE CENTER OF OGEE WEIR WITH RELEASE OF A LARGE VOLUME OF WATER No 0 0 0 0 $100,000 to $500,000 COFFERDAM CONSTRUCTED; A 20' BOTTOM WIDTH BREACH CHANNEL EXCAVATED TO DRAIN BY MAY 11 HOLE UNDER WEIR MEASURED 20' WIDE & 4' DEEP. REHAB PROJECT COMPLETE ON 7/27/2004. P RE R Y 18 ft 2344.00 218.00 1954 PA00780 TROUT CREEK 41.1536 -75.5775 2002 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
FISH POND DAM PA L Failure 04/28/1994 Seepage/Internal Erosion Erosion PA00859-3183 20'x10'x6' HOLE ERODED AROUND COLLAPSED INLET BOX & POND ELEVATION DROPPED 5 FT. Yes 0 0 1 0 NONE Unknown THE DAM WAS BREACHED AND REBUILT UPSTREAM, CREATING A SMALLER LAKE. PLASTIC TARP WAS USED AS "ARMORING" AND FLEXIBLE PLASTIC PIPE AS A "DIKE" AROUND THE HOLE. P RE R 39 ft 0.00 1975 PA00859 TRIB. OF ROARING CK. 40.5436 -76.2218 PADEP 1 DAY Yes PA Dam Safety
PENN FOREST PA H Non-Failure 07/01/1994 Seepage/Internal Erosion Excessive/Increased Seepage PA00608-3181 PIEZOMETER READINGS SUDDENLY DECLINED INDICATING INCREASED SEEPAGE Yes 0 0 0 0 None 24-HR SURVEILLANCE & 2/FT PER DAY DRAWDOWN. REPLACED WITH RCC DAM, COMPLETED IN 1998. L RCRE S Y 151 ft 27600.00 462.00 1998 PA00608 WILD CREEK 40.9306 -75.5625 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
BEARFOOT LAKE DAM TX H Non-Failure 10/17/1994 Unknown Spillway Erosion/Head Cutting TX03916-2755 E.S. BREACH P RE R N 27 ft 3207.00 0.00 1964 TX03916 MILL CREEK 30.4819 -94.7734 N TX DEQ
CADE LAKE NUMBER 3 DAM TX S Non-Failure 10/17/1994 Unknown Spillway Deficiency TX04210-2756 S.S. FAILED L RE R N 20 ft 584.00 0.00 1972 TX04210 SECOND DAVIDSON CREEK 30.5039 -96.7656 TCEQ TX DEQ
LAKE TINKLE DAM TX L Non-Failure 10/17/1994 Unknown Spillway Erosion/Head Cutting TX03876-2757 E.S. FAILED P RE R NR 20 ft 280.00 35.00 1949 TX03876 TR-WANDERS CREEK 31.7697 -94.4845 TCEQ TX DEQ
RANNEFELD DAM TX S Non-Failure 10/17/1994 Seepage/Internal Erosion Piping TX06922-2758 PIPING AT S.S. P RE Y 16 ft 115.00 7.00 1994 TX06922 TR-DECKER BRANCH 30.1497 -95.6966 1995 TCEQ TX DEQ
CONOWINGO MD H Non-Failure 01/19/1996 Hydrologic/Flooding High Reservoir Level Debris Clogging MD00097-3508 Difficult operation due to rapid runoff (rain on snow) and ice jams. Yes EAP activated for the first time in 60 years of operation since reservoir level couldn't be controlled. U CNPG HRS Y 94 ft 310000.00 8563.00 1928 MD00097 SUSQUEHANNA RIVER 39.661 -76.1735 1978 MD DAM SAFETY Yes ASDSO Decade Dam Series
ROBERTS TANK DAM TX L Non-Failure 07/14/1996 Seepage/Internal Erosion Piping TX01961-2754 INTERNAL EROSION P RE C NR 20 ft 560.00 0.00 1938 TX01961 SAN FELIPE ARROYO 31.5887 -106.107 N TX DEQ
BIG LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03753-2744 OVERTOPPING P RE ISR Y 21 ft 357.00 22.00 1949 TX03753 TR-MAGNUS BRANCH 30.6938 -94.423 1997 TCEQ TX DEQ
BOYKIN LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03751-2745 OVERTOPPING P RE IR NR 15 ft 195.00 0.00 1976 TX03751 MANGUS BRANCH 30.7212 -94.4486 TCEQ TX DEQ
EAST LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03754-2746 OVERTOPPING P RE ISR Y 22 ft 327.00 19.00 1949 TX03754 TR-MAGNUS BRANCH 30.6995 -94.4207 1997 TCEQ TX DEQ
ELECTRO LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03762-2747 OVERTOPPING P RE R Y 12 ft 50.00 9.00 1927 TX03762 MAGNUS BRANCH 30.7266 -94.448 TCEQ TX DEQ
LAKE CHARMAINE DAM TX L Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03755-2748 OVERTOPPING L RE R Y 24 ft 700.00 88.00 1965 TX03755 MAGNUS BRANCH 30.6738 -94.4014 2004 TCEQ TX DEQ
LAKE GALAHAD DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03757-2749 OVERTOPPING L RE R Y 11 ft 730.00 0.00 1958 TX03757 MAGNUS BRANCH 30.6745 -94.4206 2009 TCEQ TX DEQ
SUTTON LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03763-2750 OVERTOPPING P RE R N 13 ft 210.00 41.00 1915 TX03763 MAGNUS BRANCH 30.7031 -94.4475 2000 TCEQ TX DEQ
TWIN LAKES DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03766-2751 OVERTOPPING P RE S NR 10 ft 125.00 25.00 1915 TX03766 MANGUS BRANCH 30.7147 -94.4514 TCEQ TX DEQ
HEARN DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX09407-2752 OVERTOPPING P RE R Y 17 ft 68.00 0.00 1800 TX09407 MAGNUS BRANCH 30.7407 -94.4424 TCEQ TX DEQ
WEST LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03752-2753 OVERTOPPING P RE ISR Y 24 ft 360.00 20.00 1949 TX03752 TR-MAGNUS BRANCH 30.7002 -94.426 1997 TCEQ TX DEQ
CASA MONTE DAM TX L Non-Failure 01/01/1997 Hydrologic/Flooding Overtopping TX07035-2742 OVRTPG/UNDRMNG P RE NR 15 ft 334.00 56.00 1993 TX07035 NUECES RIVER 28.6057 -99.7697 N TX DEQ
HOLLAND DAM SITE A TX L Non-Failure 01/01/1997 Structural Stability Cracking TX02021-2743 FRACTURED L CB I NR 13 ft 700.00 0.00 1911 TX02021 NUECES RIVER 28.3016 -99.1397 N TX DEQ
JAN LAND COMPANY LAKE NO 1 DAM TX L Non-Failure 10/17/1998 Hydrologic/Flooding Overtopping TX01580-2741 OVERTOPPING P RE R NR 20 ft 206.00 13.00 1967 TX01580 TR-BRUSHY CREEK 30.0095 -97.7982 N TX DEQ
LAKE DONNA DAM TX L Non-Failure 04/03/1999 Hydrologic/Flooding Overtopping TX00036-2739 OVERTOPPING P RE R NR 21 ft 145.00 5.00 1963 TX00036 TR-WEST FORK DOUBLE BRANCH 30.6864 -94.756 TCEQ TX DEQ
LAKE JOBE DAM TX L Non-Failure 04/03/1999 Hydrologic/Flooding Overtopping TX04237-2740 OVERTOPPING P RE RP NR 12 ft 63.00 8.00 1963 TX04237 TR-CHOATES CREEK 30.7087 -94.8888 N TX DEQ
MOSS CREEK LAKE DAM TX H Non-Failure 02/23/2000 Unknown Spillway Deficiency TX03798-2737 SPWY FAILURE L RE SR Y 67 ft 5700.00 146.00 1939 TX03798 MOSS CREEK TRIBUTARY TO BEALS CREEK 32.2436 -101.311 TCEQ TX DEQ
POWELL LAKE DAM TX L Non-Failure 02/23/2000 Hydrologic/Flooding Overtopping TX03797-2738 OVERTOPPING L RE SP NR 35 ft 2988.00 0.00 1939 TX03797 POWELL CREEK 32.2093 -101.269 TCEQ TX DEQ
CAMP LA JUNTA DAM TX S Non-Failure 05/01/2000 Hydrologic/Flooding Overtopping TX09244-2736 OVERTOPPING P CNRE R Y 12 ft 25.00 3.00 1978 TX09244 SOUTH FORK GUADALUPE RIVER 30.0679 -99.3349 2005 TCEQ TX DEQ
JC WEBB DAM TX L Non-Failure 07/05/2002 Hydrologic/Flooding Overtopping TX04697-2735 OVERTOPPING P RE P NR 19 ft 53.00 6.00 1967 TX04697 TR-LEON CREEK 29.7143 -98.6722 TCEQ TX DEQ
DEAL ISLAND WILDLIFE DAM MD Failure 09/01/2003 Hydrologic/Flooding Unknown MD00215-3095 4500 linear feet of embankment partially breached during Hurricane Isabel Isabel No RE 4 ft 1000.00 0.00 MD00215 38.1717 -75.8933 MD DAM SAFETY MDE Dam Safety Program
ST CLAIR FARM POND MD S Non-Failure 09/23/2003 Hydrologic/Flooding Overtopping MD00130-3093 Partial failure. Dam overtopped by about 1ft during 4-5" rainfall on Sept 22-23, 2003. Owner observed 4ft dia sinkhole in crest & significant flow along CMP spillway pipe at top of dam. No P RE R Y 18 ft 64.00 8.00 1968 MD00130 CHURCH BRANCH, TR-BUSH CREEK 39.3417 -77.2245 1968 MD DAM SAFETY MDE Dam Safety Program
LAKE CHARMAINE DAM TX L Non-Failure 03/14/2004 Seepage/Internal Erosion Piping TX03755-2734 PIPING L RE R Y 24 ft 700.00 88.00 1965 TX03755 MAGNUS BRANCH 30.6738 -94.4014 2004 TCEQ TX DEQ
COMANCHE CREEK DAM TX H Non-Failure 04/04/2004 Hydrologic/Flooding Overtopping TX02127-2733 OVERTOPPING, DID NOT BREACH L RE I N 22 ft 1113.00 100.00 1955 TX02127 COMANCHE CREEK 30.8747 -102.878 TCEQ TX DEQ
CALLAWAY DAM TX L Non-Failure 05/13/2004 Hydrologic/Flooding Overtopping TX02133-2731 OVERTOPPING P RE R NR 20 ft 298.20 25.00 1961 TX02133 TR-LITTLE PIN OAK CREEK 30.9199 -96.5468 2006 TCEQ TX DEQ
MCGUIRE LAKE DAM TX L Non-Failure 05/13/2004 Hydrologic/Flooding Overtopping TX02134-2732 OVERTOPPING P RE R NR 15 ft 360.00 38.00 1961 TX02134 LITTLE PIN OAK CREEK 30.9151 -96.5518 N TX DEQ
DUTCH FORK PA H Non-Failure 09/17/2004 Hydrologic/Flooding Spillway Chute Failure PA00490-3208 MORE THAN 6-INCHES RAIN FROM HURRICANE IVAN UNDERMINED CONCRETE SPILLWAY SLABS Ivan No 0 0 THE RESERVOIR WAS DRAINED. FUNDING AND RECONSTRUCTION THE DAM TOOK 8 YEARS DEWATERING & FISH SALVAGE CONCLUDED ON NOV. 4, 2004, UTILIZING ELECTOFISHING EQUIPMENT. S RE RS Y 42 ft 1850.00 91.00 1959 PA00490 DUTCH FORK BUFFALO CREEK 40.1458 -80.4675 2012 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 8 YEARS Yes PA Dam Safety
LAKE POCO DAM PA S Non-Failure 09/17/2004 Hydrologic/Flooding Overtopping Erosion Sinkhole PA01807-3192 HURRICANE IVAN OVERTOPPING SEVERELY ERODED DOWNSTREAM SLOPE & LARGE SINKHOLES DEVELOPED Ivan No 0 0 OWNER DECIDED NOT TO REPAIR; A BREACH PLAN WAS SUBMITTED, APPROVED AND COMPLETED. 0 DAM DID NOT HAVE A PERMIT. UNAUTHORIZED REPAIRS WERE INITIATED: FILLING OF ERODED AREA WITH ROCKFILL. P RE 13 ft 0.00 PA01807 TR JACOBY CREEK 40.5434 -75.0803 PADEP 1 DAY PA Dam Safety
LAKE JENKINS MD L Non-Failure 11/19/2004 Hydrologic/Flooding Overtopping MD00153-3090 Dam severely damaged due to overtopping flows displacing masonry units. No S VAMS R NR 35 ft 43.00 3.00 1936 MD00153 POTOMAC RIVER-TR 39.6374 -78.3048 1936 MD DAM SAFETY MDE Dam Safety Program
RYERSON STATION PA H Non-Failure 06/28/2005 Seepage/Internal Erosion Cracking Excessive/Increased Seepage PA00193-3216 NORMAL INSPECTION SHOWED CRACKING AND SEEPAGE POSSIBLY RELATED TO NEARBY UNDERGROUND MINING Yes 0 1 Other $25 million to $50 million DAM WAS DRAWN DOWN 10 FEET AND EVENTUALLY BREACHED. ONGOING MONITORING SHOWN CONTINUING MOVEMENT. REBUILDING PLAN WAS ABANDONED IN 2015. LOSS OF PUBLIC BOATING AND FISHING OPPORTUNITIES AT A STATE PARK. S CNPG R N 42 ft 3500.00 62.00 1960 PA00193 NORTH FORK DUNKARD FORK 39.89 -80.4494 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
JOHN MAY DAM NO 2 TX S Non-Failure 07/01/2005 Seepage/Internal Erosion Piping Animal Activity TX06389-2730 PIPING, ANIMAL BURROWS P RE N 15 ft 66.00 11.00 1945 TX06389 TR-TANKERSLEY CREEK 33.1813 -95.0011 TCEQ TX DEQ
KA LOKO DAM HI H Failure 03/14/2006 Manmade Action Other Overtopping HI00000-3585 24 days into period of heavy rain, dam breaches, apparently due to ~2’ max overtopping near former spillway (no spillway found after breach), flood depth ~10’ to 30’, causing 7 fatalities (including pregnant woman) ~16 min after breach 7 P RE I 42 ft 0.00 1890 HI00000 0 0 1912 Y
GRANDE VIEW FARMS COMMUNITY POND MD S Non-Failure 03/29/2006 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole MD00172-3094 Owners engineer advises that CMP spillway has failed.10ft sinkhole in d.s. slope over pipe, signif leakage along outside of pipe.Riser is deteriorated. No P RE R Y 22 ft 76.00 8.00 1969 MD00172 BROAD CREEK-TR 39.6826 -76.3531 2008 MD DAM SAFETY MDE Dam Safety Program
GALESTOWN MILLPOND MD L Failure 06/25/2006 Hydrologic/Flooding Overtopping MD00124-3089 Dam breached in two locations following 10-15 inches of rain in 12 hours. Partially attributed to debris blocking spilllway. No L RE RI NR 9 ft 228.00 44.00 1972 MD00124 GALES CREEK 38.5676 -75.7135 2008 MD DAM SAFETY MDE Dam Safety Program
MILL CREEK DAM MD L Failure 06/25/2006 Hydrologic/Flooding Unknown MD00214-3092 Breached during rain event No P RE RI NR 11 ft 78.00 11.00 1930 MD00214 MILL CREEK 38.5947 -75.8272 1999 MD DAM SAFETY MDE Dam Safety Program
LOWER ALFORD LAKE PA H Non-Failure 06/26/2006 Hydrologic/Flooding Overtopping Erosion PA00053-3206 OVERTOPPING OF STONE MASONRY DAM RESULTED IN EROSION AT THE TOE. No 0 0 AN EMERGENCY PERMIT WAS ISSUED FOR THE REPAIRS, WHICH WERE TO BEGIN IN SEPTEMBER 2006. P MSREST R Y 15 ft 315.00 34.00 1919 PA00053 MARTINS CREEK 41.8069 -75.7742 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 3 DAYS PA Dam Safety
BIG ELK LAKE PA S Non-Failure 06/26/2006 Hydrologic/Flooding Overtopping Erosion PA00056-3204 OVERTOPPING OF DAM DURING EXTREME RAINFALL CAUSED "SCOUR OR SINKHOLE" IN TOP OF DAM Yes 0 15 6 0 AN EMERGENCY PERMIT WAS ISSUED TO REPAIR THE DAM. EAP INDICATES 15 PEOPLE AT RISK FROM FAILURE. EAP WAS IMPLEMENTED WITH EVACULATIONS. P MSREST RS Y 12 ft 740.00 79.00 1860 PA00056 ELK LAKE STREAM 41.7528 -75.9547 2006 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 3 DAYS PA Dam Safety
PURDY (STUMP POND) PA L Failure 06/26/2006 Hydrologic/Flooding Spillway Chute Failure PA00063-3203 PARTIAL BREACHING OF THE STONE MASONRY SPILLWAY, LOWERING NORMAL POOL APPROXIMATELY 6 INCHES. 0 0 PA FISH & BOAT ASKED ABOUT REPAIRS BUT SENT IN NO PLANS FOR REQUIRED AUTHORIZATION. 2008 DEP INSPECTION SHOWED NO REPAIRS. NO FILE DATA OR CORRESPONDENCE SINCE 2008. S MSRE R NR 7 ft 62.00 12.00 1919 PA00063 SALT LICK CREEK 41.8617 -75.6667 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 3 DAYS No PA Dam Safety
BRUSHVILLE LAKE PA S Failure 06/26/2006 Hydrologic/Flooding Overtopping PA00000-3235 STONE MASONRY EARTHFILL DAM OVERTOPPED AND FAILED; FULLY BREACHED. No 0 0 EMERGENCY PERMIT ISSUED TO STABILIZE THE BREACHED SECTION. PERMIT APP. IN 2008 TO REBUILD DAM. PERMIT APP, INACTIVE FOR YRS, IS ACTIVE AS OF 2018, NEARLY COMPLETED BUT NOT YET ISSUED. P STMSRE R 15 ft 0.00 PA00000 LEWIS CREEK 41.5454 -75.3754 PADEP 3 DAYS PA Dam Safety
CARPENTER LAKE PA L Non-Failure 06/26/2006 Hydrologic/Flooding Overtopping Erosion PA00000-3236 OVERTOPPING RESULTED IN EROSION OF THE DOWNSTREAM FACE. 0 0 EMERGENCY PERMIT TO REPAIR EMBANKMENT WITH SPECIAL CONDITON TO SUBMIT APP FOR REHABILITATION. CONCEPT APPROVED BY DEP IN 2007 BUT NO FOLLOW-UP SUBMISSION OF SIGNED & SEALED PLANS. P REST P 12 ft 0.00 PA00000 TR MARTINS CREEK 41.42 -75.4518 PADEP 3 DAYS PA Dam Safety
ELBOW LAKE PA L Failure 06/26/2006 Hydrologic/Flooding Overtopping PA00000-3237 DAM WAS FULLY BREACHED BY OVERTOPPING 0 0 EMERGENCY PERMIT WAS ISSUED TO STABILIZE THE BREACH SECTION. 150 OWNER'S ENGR SUBMITTED PLAN TO REBUILD; PERMIT APP. REQ'D. NO FOLLOW UP, DAM REMAINS BREACHED. P RE R 11 ft 0.00 PA00000 BEAVER CREEK 41.5226 -75.4716 PADEP 3 DAYS PA Dam Safety
MORELLI PA L Non-Failure 06/26/2006 Hydrologic/Flooding Overtopping PA00000-3238 DAM OVERTOPPED AND THERE WAS MAJOR DAMAGE. 0 0 EMERGENCY PERMIT ISSUED TO BREACH UNTIL OWNER DECIDES FUTURE OF DAM. IN 2007 OWNER OBTAINED PERMIT TO REPAIR THE DAM AND ALSO COMPLETED THE WORK IN 2007. P RE R 15 ft 0.00 1969 PA00000 TR SUSQUEHANNA RIVER 41.5531 -75.4649 PADEP 3 DAYS PA Dam Safety
GILLESPIES POND PA S Failure 06/26/2006 Hydrologic/Flooding Overtopping PA00000-3239 THE DAM SUFFERED MAJOR DAMAGE AND WAS PARTIALLY BREACHED BY EXCESSIVE RAINFALL EVENT. No 0 0 EMERGENCY PERMIT WAS ISSUED TO STABILIZE THE PARTIAL BREACH SECTION. PARTIAL BREACH IS REPAIRED. A PERMIT APPLICATION TO MODIFY THE DAM IS PENDING; IT WAS SUBMITTED IN 2009. P STRE R 10 ft 0.00 PA00000 MEYLERT CREEK 41.5043 -75.4333 PADEP 3 DAYS PA Dam Safety
LAKE WANAMIE PA H Non-Failure 06/26/2006 Hydrologic/Flooding Erosion PA00552-3190 DAM DID NOT OVERTOP DURING EXTREME RAINFALL, BUT EXCESSIVE EROSION DEVELOPED. No 0 0 A DAM REMOVAL PLAN HAD BEEN IN PROCESS. AN EMERGENCY PERMIT WAS ISSUED TO BREACH. P REMS R 26 ft 0.00 1850 PA00552 WANAMIE RUN 41.1006 -76.0124 PADEP 3 DAYS PA Dam Safety
LAKE NEEDWOOD MD H Non-Failure 06/27/2006 Seepage/Internal Erosion High Reservoir Level Excessive/Increased Seepage MD00046-3085 Heavy rain pushed reservoir to record level. Heavy seepage on downstream slope near groin resulted in emergency drain/filter construction. Yes L RE RC Y 65 ft 7023.00 74.00 1965 MD00046 ROCK CREEK 39.114 -77.1295 2007 MD DAM SAFETY MDE Dam Safety Program
HUNTSVILLE FILTER PA L Failure 06/27/2006 Hydrologic/Flooding Piping PA00000-3232 DURING EXTREME RAINFALL, PIPING HOLE DEVELOPED UNDER THE STRUCTURE. 0 0 AN EMERGENCY PERMIT WAS ISSUED TO REMOVE THE DAM. P RE O 13 ft 0.00 PA00000 HUNTSVILLE CREEK 41.1754 -75.5554 PADEP 3 DAYS PA Dam Safety
HUNTSVILLE INTAKE PA L Failure 06/28/2006 Hydrologic/Flooding Overtopping PA00000-3233 EXTREME RAINFALL WITH OVERTOPPING BREACHED DAM IN NATURAL MATERIAL ON THE RIGHT ABUTMENT. 0 0 EMERGENCY PERMITS WERE ISSUED TO (1) STABILIZE DAMAGE AND (2) REMOVE THE DAM. P STMS O 13 ft 0.00 PA00000 HUNTSVILLE CREEK 41.1754 -75.5542 PADEP 3 DAYS PA Dam Safety
FAIRCHILD PA L Non-Failure 06/29/2006 Hydrologic/Flooding Overtopping Erosion PA00000-3234 OVERTOPPING DURING EXTREME RAINFALL CAUSED DAMAGE TO THE DOWNSTREAM SLOPE. 0 0 P RE PG 10 ft 0.00 PA00000 TR NEWPORT CREEK 41.1024 -76.003 PADEP 3 DAYS PA Dam Safety
DOGWOOD LAKE DAM TX L Non-Failure 11/01/2006 Unknown Spillway Deficiency TX00029-2729 S.S. FAILED, DID NOT BREACH P RE R NR 32 ft 209.00 13.00 1965 TX00029 TR-CHOATES CREEK 30.725 -94.8771 2007 TCEQ TX DEQ
LAKE HANSON SD L Failure 05/05/2007 Hydrologic/Flooding Spillway Erosion/Head Cutting SD00691-3416 Approximately 8 to 10 inches of precipitation fell over a large portion of the watershed and caused operation of the earthen secondary spillway which headcut back to the reservoir. No 0 unknown unknown unknown There was also minor damage to the primary spillway and some erosion of the embankment due to flow from secondary. Secondary was partially repaired in June 2007. S RE R NR 24 ft 340.00 0.00 1932 SD00691 TR-JAMES 43.625 -97.805 1996 DENR SD Dam Safety
PECKS POND PA H Non-Failure 05/30/2007 Seepage/Internal Erosion Sinkhole PA00754-3194 A SINKHOLE ON THE CREST, 1' LONG X 6' WIDE X 8' DEEP, FOUND DURING DEP ANNUAL INSPECTION No 0 0 0 0 NONE FOLLOW-UP INSPECTION FOUND NO SEEPAGE, SINKHOLE WAS FILLED & MONITORED. NO FURTHER PROBLEM. SINKHOLE MAY HAVE DEVELOPED IN CONNECTION WITH RIPRAP INSTALLATIION PROJECT IN FALL OF 2000. S CNMSRE R Y 7 ft 2067.00 420.00 1906 PA00754 BUSHKILL CREEK 41.2808 -75.0869 2001 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION Yes PA Dam Safety
CHACON DAM TX H Non-Failure 06/18/2007 Unknown Spillway Deficiency TX01783-2728 S.S. FAILED L RE I N 15 ft 2312.00 107.00 1912 TX01783 CHACON CREEK 29.2366 -98.8739 N TX DEQ
GABRIELS OVERLOOK DAM TX H Non-Failure 06/28/2007 Hydrologic/Flooding Overtopping TX07254-2727 OVERTOPPING, DID NOT BREACH P RE Y 25 ft 114.00 11.00 1964 TX07254 TRIBUTARY OF SAN GABRIEL RIVER 30.6195 -97.8003 TCEQ TX DEQ
HIGHLAND CLUB DAM TX L Non-Failure 07/01/2007 Hydrologic/Flooding Overtopping TX03995-2724 OVERTOPPING P RE R NR 17 ft 412.00 50.00 1919 TX03995 TR-ARTHUR REEVES BRANCH 32.9408 -94.9858 2007 TCEQ TX DEQ
LAKE O THE WOODS DAM TX L Non-Failure 07/01/2007 Hydrologic/Flooding Overtopping TX04240-2725 OVERTOPPING P RE R NR 16 ft 191.00 12.00 1957 TX04240 HIGHLAND POND BRANCH 32.6475 -95.2786 2008 N TX DEQ
MEADOW WOOD LAKE NO 3 DAM TX S Non-Failure 07/01/2007 Seepage/Internal Erosion Piping TX06890-2726 PIPING P RE R Y 16 ft 223.00 9.00 1950 TX06890 TR-BACHELOR CREEK 32.6789 -96.3036 2008 TCEQ TX DEQ
PESSINK LAKE DAM TX H Non-Failure 07/08/2007 Hydrologic/Flooding Overtopping TX07255-2723 OVERTOPPING, DID NOT BREACH P RE R Y 18 ft 50.00 7.00 1800 TX07255 TR-RODDY BRANCH 32.2065 -95.2822 TCEQ TX DEQ
NEAR KIM LAKE DAM TX S Non-Failure 07/18/2007 Unknown Spillway Deficiency TX00103-2722 S.S. FAILED, DID NOT BREACH P RE R Y 19 ft 293.00 18.00 1963 TX00103 TR-LAKE CREEK 30.2923 -95.7233 2010 TCEQ TX DEQ
ANDERSON-RAINES DAM TX L Non-Failure 08/03/2007 Unknown Spillway Deficiency TX07259-2721 S.S. FAILED, DID NOT BREACH P RE NR 20 ft 134.00 5.00 1987 TX07259 TR-DRY HOLLOW 30.9145 -97.1999 TCEQ TX DEQ
ROCKVIEW RESERVOIR PA H Non-Failure 10/01/2007 Seepage/Internal Erosion Excessive/Increased Seepage PA00472-3182 THERE WAS AN INCREASE IN SEEPAGE FLOW AT THE RIGHT WALL OF THE STILLING BASIN. No 0 0 RESERVOIR WAS DRAWN DOWN BY 15 FEET AND THE SEEP WAS TESTED TO DETERMINE ITS SOURCE. NO FLOW INCREASE AT HIGHER POOL LEVELS & CHEMICAL TESTS SHOWED SEEPAGE NOT THRU DAM. S CNPG S Y 53 ft 50.00 2.00 PA00472 MCBRIDES RUN 40.8331 -77.7556 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 10 MONTHS Yes PA Dam Safety
BULL RUN PA H Non-Failure 12/28/2007 Malfunction of Equipment/Gate Debris Clogging PA00463-3212 THE TRASH RACK AND OUTLET PIPE WAS PARTIALLY CLOGGED AND DRY DAM WAS NOT DRAINING. No 0 0 WATER LEVEL WAS 9 FT ABOVE OUTLET PIPE. CITY RENTED PUMP TO DRAW DOWN WATER & CLEAR TRASH RACK. IN 2010, A PERMIT WAS ISSUED TO MODIFY THE OUTLET AND TRASH RACK. COMPLETED AS PER 2012 INSPECTION. L RE C Y 44 ft 383.00 20.00 1934 PA00463 BULL RUN 40.3478 -79.6056 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
RHINES RESERVOIR DAM TX L Non-Failure 01/01/2008 Seepage/Internal Erosion Piping TX02803-2720 PIPING P RE S NR 22 ft 2949.00 300.00 1948 TX02803 NECHES RIVER 32.4961 -95.6764 2010 TCEQ TX DEQ
CUSHMAN WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-181 No Four of the dams were state regulated, NID sized structures (Cushman, Carlin, Figor and Wyocena) while one was an unauthorized dam. All of the failures were related to embankment breaches and resulted in total loss of the impoundments. Three of the fail RE 0.00 WI00000 0 0
CARLIN WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-182 No Four of the dams were state regulated, NID sized structures (Cushman, Carlin, Figor and Wyocena) while one was an unauthorized dam. All of the failures were related to embankment breaches and resulted in total loss of the impoundments. Three of the fail 0.00 WI00000 0 0
FIGOR WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-183 No Four of the dams were state regulated, NID sized structures (Cushman, Carlin, Figor and Wyocena) while one was an unauthorized dam. All of the failures were related to embankment breaches and resulted in total loss of the impoundments. Three of the fail RE 0.00 WI00000 0 0
WYOCENA WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-184 No Four of the dams were state regulated, NID sized structures (Cushman, Carlin, Figor and Wyocena) while one was an unauthorized dam. All of the failures were related to embankment breaches and resulted in total loss of the impoundments. Three of the fail RE 0.00 WI00000 0 0
LAKE DELTON WI Failure 01/01/2008 Unknown Unknown WI00000-185 No Not the failure of a dam but the failure of a land mass that lay between the impoundment and an adjacent river. The breached area is being rebuilt as a dam and the original dam on the impoundment, Dell Creek, is receiving significant upgrades. 0.00 WI00000 0 0
FALLS RUN DAM WV U Failure 01/01/2008 Unknown Unknown WV04932-179 No Breached by WVDEP after pipe clogged P RE O N 31 ft 16.10 0.00 WV04932 TR-OF TYGART VALLEY RV 39.4161 -80.1611
NON-JURISDICTIONAL DAM IA Failure 01/01/2008 Seepage/Internal Erosion Piping IA00000-149 No 0.00 IA00000 0 0
LOWER WILDWOOD LAKE IN Failure 01/01/2008 Unknown Unknown IN00000-144 No The emergency spillway started to breach during a significant rainfall event in June requiring the lowering of the pool level and emergency repairs. 0.00 IN00000 0 0
SAVAGE RIVER MD Failure 01/01/2008 Unknown Unknown MD00000-150 No Bonneted gate failure and lake lowered 70 feet below normal as precaution. 0.00 MD00000 SAVAGE 0 0
GREENBRIER STATE PARK MD Failure 01/01/2008 Seepage/Internal Erosion Unknown MD00000-151 No 0.00 MD00000 0 0
DEEP CREEK MD Failure 01/01/2008 Unknown Unknown MD00000-152 Yes incident with penstock hardware failure-EAP activated for a short time. 0.00 MD00000 0 0
LITTLE YOUGHIGHENY SITE 3 MD Failure 01/01/2008 Unknown Unknown MD00000-153 Yes Spillway conduit plugged resulting in emergency spillway flow & evacuation of some residents of Town of Oakland, MD. 0.00 MD00000 0 0
CHARTWELL GOLF COURSE MD Failure 01/01/2008 Unknown Unknown MD00000-154 No Chartwell Golf Course CMP spillway collapsed after 45+ years of service. 0.00 MD00000 0 0
TODD LAKES MD Failure 01/01/2008 Unknown Unknown MD00000-155 No Spillway collapsed after 30+ years of service. 0.00 MD00000 0 0
SCOTS FANCY MD Failure 01/01/2008 Unknown Unknown MD00000-156 No spillway collapsed after 15+ years of service. 0.00 MD00000 0 0
SHORES OF CALVERT MD Failure 01/01/2008 Unknown Unknown MD00000-157 No Spillway collapsed after 40+ years of service 0.00 MD00000 0 0
BREEDSVILE MI Failure 01/01/2008 Hydrologic/Flooding Unknown MI00000-158 No Failure a result of high flows resulting from heavy rains. 0.00 MI00000 0 0
NILES MI Failure 01/01/2008 Hydrologic/Flooding Unknown MI00000-159 Yes 40 Partial failure as a result of storm system. About 40 people were evacuated downstream as a precaution. 0.00 MI00000 0 0
LAKE ALPINE MO Failure 01/01/2008 Seepage/Internal Erosion Piping MO00000-161 No Sinkhole developed on upper portion of downstream face directly above principal pipe. Sinkhole filled with water, which caused large erosional feature to develop on lower portion of downstream face. REPORTED MAY27, 2008 0.00 MO00000 0 0
HERRING LAKE DAM MO L Failure 01/01/2008 Seepage/Internal Erosion Piping MO10914-169 No Small sinkhole developed above the principal spillway conduit on the upstream crest of the dam. Sinkhole approximately 10 feet in diameter and 2-3 feet deep. The sinkhole was likely the result of material piping into the conduit through a damaged joint or P RE R N 50 ft 1750.00 46.00 1968 MO10914 SNYDER CREEK 38.7593 -91.9629 DAM AND RESERVOIR SAFETY PROG
KATY LAKE DAM MO H Failure 01/01/2008 Seepage/Internal Erosion Piping MO11048-168 No Small sinkhole developed on downstream face of dam approximately 10 feet vertically below crest of dam. Sinkhole approximately 5 feet in diameter and 4 feet deep. Sinkhole may be result of seepage through old root tunnels. REPORTED APRIL 29, 2008 P RE SICR Y 45 ft 273.00 14.00 1905 MO11048 EWING CREEK 38.6985 -91.888 1987 DAM AND RESERVOIR SAFETY PROG
ABNEY LAKE DAM MO L Failure 01/01/2008 Structural Stability Sliding MO30695-166 test No Small rotational slide on downstream face. Width of slide approximately 30 feet. Vertical displacement approximately 4 feet. REPORTED MAY 21, 2008 S RE R N 36 ft 117.00 8.00 1968 MO30695 TR-CLEAR CREEK 37.8231 -90.8224 DAM AND RESERVOIR SAFETY PROG
LAC SHAYNE DAM MO H Failure 01/01/2008 Structural Stability Sliding MO31835-162 No Large rotational slide on downstream face in same general location of previous slide. Slide scarp width exceeds 100 feet. Total vertical movement exceeds 5 feet. REPORTED MARCH 24, 2008 L RE R N 72 ft 2475.00 51.00 1979 MO31835 POND CREEK 37.8974 -90.6434 1995 DAM AND RESERVOIR SAFETY PROG
HARPER LAKE DAM MO H Failure 01/01/2008 Structural Stability Sliding MO31866-163 No Rotational slide on downstream face. Width of slide approximately 60 feet. Vertical movement approximately 5 feet. REPORTED MARCH 20, 2008 P RE R N 38 ft 83.00 6.00 1978 MO31866 TR GOOSE CREEK 37.9924 -90.3557 DAM AND RESERVOIR SAFETY PROG
LAKE KONSTANZ DAM MO H Failure 01/01/2008 Structural Stability Sliding MO32048-165 No Rotational slide on downstream face. Width of slide approximately 50 feet. Maximum vertical displacement approximately 3 feet. REPORTED FEBRUARY 6, 2008 P Y 90 ft 103.00 19.00 1999 MO32048 TRIB. CHARRETTE CREEK 38.7625 -91.0742 1998 DAM AND RESERVOIR SAFETY PROG
LAKE BOUTIN DAM MO H Failure 01/01/2008 Structural Stability Sliding MO40008-164 No Small surficial slide on downstream face, with subsequent partial liquifaction of slide mass, resulting in mud flow. REPORTED MARCH 21, 2008 S RE R N 46 ft 377.00 19.00 1961 MO40008 TR-FLORA CREEK 37.4519 -89.4883 1991 DAM AND RESERVOIR SAFETY PROG
EXEMPT-NCUC NC Failure 01/01/2008 Seepage/Internal Erosion Piping NC00000-170 No piping upon first filling 0.00 NC00000 0 0
MOORE-029 NC Failure 01/01/2008 Seepage/Internal Erosion Piping NC00000-171 No MOORE-029 Built without permit, piping upon first filling 0.00 NC00000 0 0
MOORE-030 NC Failure 01/01/2008 Seepage/Internal Erosion Piping NC00000-172 No MOORE-030 Built without permit, piping upon first filling 0.00 NC00000 0 0
MACON-034 NC Failure 01/01/2008 Hydrologic/Flooding Unknown NC00000-173 No MACON-034 Heavy rains, failure 0.00 NC00000 0 0
ANSON-025 NC Failure 01/01/2008 Hydrologic/Flooding Unknown NC00000-174 No heavy rains, failure 0.00 NC00000 0 0
MITCH-001 NC Failure 01/01/2008 Hydrologic/Flooding Unknown NC00000-175 No 0.00 NC00000 0 0
SEVERAL SMALL UNREGULATED DAMS VA Failure 01/01/2008 Unknown Unknown VA00000-178 No Some small unregulated dams failed during the past year. The total number of failures and extent of damages are not known. Known dams that failed (unregulated) were greater than 8 feet but less than 25 feet in height. 0.00 VA00000 0 0
UNKNOWN VT Failure 01/01/2008 Hydrologic/Flooding Overtopping VT00000-177 No Failure of earth embankment/timber crib spillway dam due to overtopping during flash flood. TC 0.00 VT00000 0 0
UNAUTHORIZED DAM WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-180 No RE 0.00 WI00000 0 0
BLAND LAKE DAM TX L Non-Failure 03/30/2008 Hydrologic/Flooding Overtopping TX03968-2719 OVERTOPPING, DID NOT BREACH P RE R NR 12 ft 150.00 29.00 1890 TX03968 AYISH BAYOU 31.5889 -94.1114 TCEQ TX DEQ
CONWAY SPORTS MAN'S CLUB LOWER DAM PA L Non-Failure 04/14/2008 Seepage/Internal Erosion Sinkhole PA01358-3179 DURING DEP INSPECTION, EXCESSIVE SEEPAGE AND 4' DEEP SINKHOLE FOUND ON DOWNSTREAM EMBANKMENT No 0 0 DEP INSTRUCTED OWNER TO BEGIN DRAWDOWN & COVER INFLOW AREA ON U/S FACE WITH RUBBER SHEETING. REPAIR PLANS RECEIVED BY DEP ON 10/21/2008 P RE R 18 ft 0.00 1917 PA01358 TR CONNOQUENESSING CREEK 40.4725 -80.0621 PADEP PA Dam Safety
LEISURE LAKE #2 DAM MO S Failure 04/29/2008 Structural Stability Sinkhole MO10420-167 vertically below crest of dam. Sinkhole approximately 5 feet in diameter and 4 feet deep. Sinkhole may be result of seepage through old root tunnels. REPORTED APRIL 29, 2008 No Large rotational slide on downstream face. Width of slide approximately 80-100 feet. Vertical displacement approximately 5 feet. REPORTED MAY 29, 2008 RE R N 39 ft 135.00 3.00 1960 MO10420 TR-RACOON CREEK 40.104 -93.7353 NONE
GREYBROOK LAKE IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-141 No precise date unknown 0.00 IN00000 0 0
CAMP VICTOR CONSERVATION CLUB IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-142 No precise date unknown. 0.00 IN00000 0 0
PRINCES EAST LAKE DAM IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-143 No precise date unknown. The embankment overtopped during a significant rainfall event in June and the downstream slope failed resulting in a major emergency response and lowering of the pool level. 0.00 IN00000 0 0
FISH HATCHERY IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-145 No precise date unknown. The embankment overtopped during a significant rainfall event in June and the downstream slope failed resulting in the lowering of the pool level and the decommissioning of the structure. 0.00 IN00000 0 0
UPPER PEOGA LAKE IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-146 No precise date unknown. The embankment overtopped during a significant rainfall event in June and the downstream slope failed resulting in a major emergency response and lowering of the pool level. 0.00 IN00000 0 0
EARLHAM LAKE IN Failure 06/01/2008 Unknown Spillway Deficiency IN00000-147 No The emergency spillway breached during a significant rainfall event in June requiring a permanent lowering of the pool level. 0.00 IN00000 0 0
HAMLIN LAKE MI Failure 06/01/2008 Hydrologic/Flooding Unknown MI00000-160 Yes precise date unknown. Dam (ID 236) nearly overtopped and damaged by high flow. A park downstream of the dam was evacuated as a precaution. The damage was to the gates caused by boats getting wedged into the opening. 0.00 MI00000 0 0
LAKE DALECARLIA IN Failure 09/01/2008 Hydrologic/Flooding Overtopping IN00000-148 No precise date unknown. ) The embankment overtopped during a significant rainfall event in September and the downstream slope failed resulting in a major emergency response and lowering of the pool level. RE 0.00 IN00000 0 0
LAKE CONNIE JEAN DAM TX L Non-Failure 09/13/2008 Unknown Spillway Deficiency TX00040-2718 S.S. FAILED, DID NOT BREACH P RE RP NR 20 ft 280.00 23.00 1965 TX00040 WILLIAMS CREEK 30.5168 -94.8099 1988 TCEQ TX DEQ
KINGSTON FOSSIL PLANT TN Failure 12/22/2008 Unknown Unknown TN00000-186 No over $100 million Not regulated as a dam. 40-acre pond used by TVA to hold slurry of ash generated by the coal-burning Kingston Steam Plant. Failure buried a road and railroad tracks leading to the plant & 300 acres. 5.4 million cubic yards (> 1B gal) of sludge. Cleanup co RE T 0.00 TN00000 0 0 TVA Y
FAWN LAKE PA H Non-Failure 03/02/2009 Unknown Spillway Chute Failure PA00693-3200 FAILURE OF THE SPILLWAY TRAINING WALL. No 0 0 FULL DRAWDOWN ORDERED UNTIL REPAIRS COMPLETED. SPILLWAY RECONSTRUCTION COMPLETED IN 2012. SPILLWAY WALL HAD SHOWN SIGNS OF MOVEMENT AT PREVIOUS INSPECTION & REPAIR PLAN REQUESTED P RE R Y 44 ft 675.00 27.00 1972 PA00693 PLUM CREEK 40.5867 -76.19 2012 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
OLD CITY LAKE DAM TX S Failure 03/12/2009 Deterioration or Poor Condition Animal Activity TX02850-773 Piping through beaver holes No 0 0 Roads Failure occurred during a moderate rainfall event. Water apparently flowed through dam when water reached the spillway level. P RE R N 14 ft 92.00 25.00 1956 TX02850 HOARD BRANCH 32.6857 -95.8896 N
HIGHWAY LAKE DAM C TX S Non-Failure 03/24/2009 Unknown Other TX03577-774 Spillway structure filled, but did not breach No 0 0 P RE R Y 20 ft 150.00 16.00 1956 TX03577 TR-CLARKS CREEK 32.5014 -94.6182 TCEQ
LAKE LORRAINE DAM TX L Non-Failure 04/19/2009 Deterioration or Poor Condition Spillway Pipe Failure TX00109-777 Spillway pipe failed, partially drained lake No 0 0 None None P RE R NR 24 ft 196.00 25.00 1963 TX00109 TR-W FORK SAN JACINTO 30.3699 -95.6297 TCEQ
LEISURE LAKE DAM TX H Non-Failure 04/25/2009 Deterioration or Poor Condition Spillway Pipe Failure TX01868-778 Spillway pipe failed, partially drained lake No 0 0 None P RE CR N 25 ft 322.00 20.00 1964 TX01868 TR-THOMPSONS CREEK 30.6338 -96.4119 TCEQ
BATTLE LAKE DAM TX L Non-Failure 05/10/2009 Deterioration or Poor Condition Spillway Riser Failure TX04113-779 Spillway drop inlet failed and drained the lake No 0 0 None County Emergency management personnel were contacted and were ready to evacuate. L RE IR NR 32 ft 916.00 30.00 1908 TX04113 RIGGS CREEK 31.548 -96.901 N
LAKE SHERIDAN PA H Non-Failure 07/31/2009 Hydrologic/Flooding Overtopping PA00744-3213 AS PER THE EAP, OWNER CONTACTED DAM SAFETY INDICATING IMMINENT OVERTOPPING. Yes 0 0 STONE MASONRY DAM ON LARGE WATERSHED WAS CONSTRUCTED TO OVERTOP. NO EVACUATIONS. COINCIDENTLY A PROJECT WAS APPROVED TO STRENGTHEN DAM FOR OVERTOPPING. PROJECT COMPLETED IN 2010. P MSST R Y 10 ft 834.00 63.00 1872 PA00744 TR TUNKHANNOCK CREEK 41.5953 -75.7664 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
PEDDY LAKE DAM TX S Failure 09/15/2009 Hydrologic/Flooding Overtopping TX07299-2717 OVERTOPPING, BREACHED P RE N 20 ft 96.00 12.00 1997 TX07299 UN TR-SOUTH FORK 32.9279 -95.2115 TCEQ TX DEQ
VICKERY LAKE DAM TX H Non-Failure 10/13/2009 Hydrologic/Flooding Overtopping TX07292-2716 OVERTOPPING, DID NOT BREACH P RE R N 20 ft 56.00 7.00 1930 TX07292 UNTR-LAKE FORK CREEK 32.7392 -95.4779 TCEQ TX DEQ
LAKE MAY (SECTION F) PA H Non-Failure 11/12/2009 Seepage/Internal Erosion Erosion Spillway Chute Failure PA01135-3177 BORO FOUND SEEPAGE ALONG THE EMERGENCY SPILLWAY. LARGE VOIDS FOUND BENEATH CONCRETE. No 0 0 LAKE WAS DRAWN DOWN. REPAIRS CONSISTED OF DRILLING HOLES IN THE SPILLWAY & FILLING VOIDS WITH GROUT. THIS IS AN OFF-STREAM LAKE. INLET WAS CLOSED TO DIRECT WATER AROUND THE LAKE. L RE R Y 22 ft 271.00 24.00 1967 PA01135 TOMS CREEK 39.7414 -77.3719 2010 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
LAKE GETAWAY DAM MS L Failure 01/21/2010 Structural Stability Slope Stability MS03566-775 Slope Stability - shear stress failure along plane of weakness in embankment No 0 0 Dams Downstream 276 County road closed for short period of time. Failure damaged dam located downstream, however downstream dam did not fail.
0 - 1 family requested to evacuate but refused 		P RE R NR 39 ft 340.00 29.00 2002 MS03566 31.7061 -88.9683 MS Dept. of Environmental Quality
HEATERS POND DAM NJ H Non-Failure 03/01/2010 Hydrologic/Flooding Overtopping NJ00795-740 Overtopping Roads several roads closed L PGRE R Y 8 ft 38.00 1910 NJ00795 SAWMILL BROOK 41.0728 -74.586 NJDEP
LAKE SHAWNEE DAM NJ S Failure 03/13/2010 Hydrologic/Flooding Overtopping NJ00334-641 Overtopping 0 0 None P PGRE R Y 9 ft 376.00 79.00 NJ00334 WELDON BROOK 40.9698 -74.5972 NJDEP 12:00 AM
PORICY DAM NJ L Failure 03/31/2010 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole NJ00480-640 sinkhole and partial collapse of CMP 0 0 Roads 0 County Route 12A closed for several weeks L PGRE R NR 8 ft 18.00 NJ00480 PORICY BROOK 40.3571 -74.0862 NJDEP
SUNBEAM LAKE DAM CA Non-Failure 04/04/2010 Seismic Sinkhole CA00000-1338 damaged from magnitude 7.2 earthquake/small sinkhole near outlet structure, formation of fissures near dam 0 0 closed minor roadway RE R 0.00 CA00000 OFFSTREAM 33 -116 CA DSOD
DUNHAM LAKE DAM KY L Non-Failure 05/02/2010 Unknown Under Investigation KY00165-681 Other 0 0 Roads U.S. 68 CLOSED FOR 24 HOURS L RE R NR 25 ft 17.00 1955 KY00165 LITTLE BARREN RIVER 36.9908 -85.6144 DOW
SPRINGBROOK TN L Failure 05/02/2010 Hydrologic/Flooding Spillway Erosion/Head Cutting TN11312-765 Spillway eroded during heavy rains No 0 0 None 517 P RE 0.00 1969 TN11312 0 0 2012
SUNSET TN L Non-Failure 05/02/2010 Hydrologic/Flooding Overtopping TN11313-768 Downstream slope badly eroded due to overtopping No 0 0 None P RE NR 28 ft 295.00 21.00 1969 TN11313 SPRING CREEK 35.7169 -88.6619 TENN SAFE DAMS PRG
FERN LAKE TN L Failure 05/02/2010 Hydrologic/Flooding Spillway Erosion/Head Cutting TN11314-769 Spillway eroded during heavy rains No 0 0 None 65 P RE 0.00 1969 TN11314 0 0 2012
CARROLLWOOD LAKE 'A-C' TN S Failure 05/02/2010 Unknown Other TN15786-770 TN Safe Dams No 0 0 None 112 P RE NR 14 ft 161.00 20.00 1988 TN15786 TRIB-FLETCHER CREEK 35.1836 -89.7689 TENN SAFE DAMS PRG
LOST NATION LAKE # 5 DAM MI L Failure 05/21/2010 Hydrologic/Flooding Overtopping MI00555-1420 Overtopping and possibly seepage RE R Y 12 ft 210.00 25.00 1956 MI00555 TRIB TO E BR ST JOSEPH 41.855 -84.5011 Michigan DEQ
HEATH BRANCH FISHING CLUB LAKE DAM TX S Non-Failure 05/21/2010 Deterioration or Poor Condition Spillway Pipe Failure TX02957-781 Spillway pipe failed, partially drained lake No 4 0 None City emergency management personnel were contacted.
One home evacuated. 		P RE R N 21 ft 400.00 0.00 1940 TX02957 MCDONALD CREEK 30.6646 -95.563 TCEQ
INDIAN HEAD LAKE IN S Non-Failure 06/01/2010 Hydrologic/Flooding Overtopping IN03388-1045 A heavy rainfall event overtopped this dam causing heavy damage to the downstream slope. Under the direction of a private engineer, the dam owner, a lake owners association constructed a short term response, a bypass channel to lower the normal level of the impounded water.
May 2011 - state decommissioned the dam under emergency order.
See attached email for more information. 		RE R 20 ft 0.00 1979 IN03388 UNNAMED TRIBUTARY WHITE LICK CREEK 40 -86
CLUB 13 LAKE DAM TX L Failure 06/10/2010 Hydrologic/Flooding Overtopping TX00255-1232 Dam overtopped and failed No 0 0 P RE R NR 28 ft 324.00 172.00 1966 TX00255 TR-BUTLER CREEK 32.2792 -95.4188 TCEQ
LOST PINE LAKE DAM TX S Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX00257-1240 Dam overtopped by more than one foot. Dam did not fail, but downstream slope was severely damaged. No 0 0 0 P RE R Y 23 ft 568.00 36.00 1929 TX00257 TR-INDIAN CREEK 32.3153 -95.4152 TCEQ
SPRING LAKE DAM TX S Failure 06/10/2010 Hydrologic/Flooding Overtopping TX00268-1231 Dam overtopped and failed No 0 0 Public Water supply line affected P RE IR N 23 ft 230.00 15.00 1920 TX00268 HITTS CREEK 32.4298 -95.301 TCEQ
RICHLAND CREEK WS SCS SITE 6A DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX00433-1253 Dam overtopped, but did not fail. No 0 0 L RE C NR 24 ft 1036.00 35.00 1964 TX00433 TR-NORTH FORK PIN OAK CREEK 31.8203 -96.7322 TCEQ
RICHLAND CREEK WS SCS SITE 16 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX01070-1255 Dam overtopped, but did not fail. No 0 0 L RE C NR 31 ft 796.00 29.00 1962 TX01070 TR-MUNGER CREEK 31.7883 -96.6242 TCEQ
RICHLAND CREEK WS SCS SITE 16A DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX01071-1254 Dam overtopped, but did not fail. No 0 0 L RE C NR 20 ft 303.00 8.00 1963 TX01071 TR-MUNGER CREEK 31.7907 -96.6186 TCEQ
RICHLAND CREEK WS SCS SITE 15 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02621-1249 Dam overtopped, but did not fail. 0 0 L RE C NR 30 ft 1764.00 30.00 1963 TX02621 TR-PIN OAK CREEK 31.8507 -96.5642 TCEQ
RICHLAND CREEK WS SCS SITE 14A DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02622-1250 Dam overtopped, but did not fail. No 0 0 L RE C NR 22 ft 974.00 42.00 1964 TX02622 TR-PIN OAK CREEK 31.8398 -96.608 2005 TCEQ
RICHLAND CREEK WS SCS SITE 14 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02623-1251 Dam overtopped, but did not fail. No 0 0 L RE C NR 22 ft 1298.00 50.00 1965 TX02623 TR-PIN OAK CREEK 31.8308 -96.5963 TCEQ
RICHLAND CREEK WS SCS SITE 31 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02624-1248 Dam overtopped, but did not fail. Had considerable emerency spillway damage. No 0 0 L RE I NR 35 ft 5838.00 56.00 1963 TX02624 BOARD CREEK 31.8705 -96.5676 2010 TCEQ
RICHLAND CREEK WS SCS SITE 107A DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02629-1243 Dam overtopped, but did not fail. No 0 0 L RE C NR 31 ft 886.00 19.00 1970 TX02629 TR-BATTLE CREEK 31.8655 -96.7147 TCEQ
RICHLAND CREEK WS SCS SITE 107B DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02630-1241 Dam overtopped by nearly one foot. Dam did not fail, but downstream slope severely damaged. No 0 0 L RE PF NR 35 ft 595.00 27.00 1964 TX02630 TR-BATTLE CREEK 31.8752 -96.7061 TCEQ
RICHLAND CREEK WS SCS SITE 12 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02632-1252 Dam overtopped, but did not fail. No 0 0 L RE C NR 22 ft 2149.00 53.00 1966 TX02632 ALLIGATOR CREEK 31.8111 -96.6272 TCEQ
RICHLAND CREEK WS SCS SITE 110 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02634-1246 Dam overtopped, but did not fail. Suffered slope damage. No 0 0 L RE C NR 30 ft 791.00 36.00 1970 TX02634 TR-BATTLE CREEK 31.8914 -96.6901 TCEQ
RICHLAND CREEK WS SCS SITE 113 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02636-1247 Dam overtopped, but did not fail. No 0 0 L RE C NR 26 ft 638.00 30.00 1970 TX02636 TR-BATTLE CREEK 31.9069 -96.6653 TCEQ
RICHLAND CREEK WS SCS SITE 109 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02642-1245 Dam overtopped, but did not fail. No 0 0 L RE C NR 22 ft 237.00 8.00 1970 TX02642 TR-BATTLE CREEK 31.8878 -96.6949 2005 TCEQ
RICHLAND CREEK WS SCS SITE 105 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02643-1244 Dam overtopped, but did not fail. No 0 0 L RE C NR 44 ft 533.00 12.00 1970 TX02643 TR-TREADWELL BRANCH 31.9329 -96.699 TCEQ
CEDAR CREEK WS SCS SITE 137 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02810-1257 Dam overtopped, but did not fail. No 0 0 L RE CRP NR 33 ft 590.00 14.00 1965 TX02810 TR-LACY FORK 32.4522 -96.0635 2010 TCEQ
CEDAR CREEK WS SCS SITE 138 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02811-1256 Dam overtopped, but did not fail. No 0 L RE CRP NR 29 ft 831.00 21.00 1968 TX02811 TR-CANEY CREEK 32.426 -96.0689 TCEQ
GRACIE CREEK ROAD DAM NE L Failure 06/12/2010 Hydrologic/Flooding Overtopping NE02661-1228 severe storm and overtopping No 0 0 Roads 142 The failure of the upstream Morgan Dam likely contributed to the overtopping and failure of this dam. A two-lane state highway which ran along the top of the dam was washed out.A two-lane state highway which ran along the top of the dam was washed out. A two-lane state highway which ran along the top of the dam was washed out. F RE 20 ft 0.00 1980 NE02661 0 0 2003
SPALDING DIVERSION DAM NE L Non-Failure 06/12/2010 Hydrologic/Flooding Overtopping NE00000-1229 The dam was overtopped but did not fail. No 0 0 0 This is a diversion dam used to divert water to the town's hydroelectric plant. The NE DNR dam safety program does not have jurisdiction over diversion dams. RE H 11 ft 0.00 NE00000 CEDAR RIVER 0 0
MORGAN DAM NE L Failure 06/12/2010 Hydrologic/Flooding Overtopping NE00000-1230 overtopped and breached No 0 0 Roads 341 The failure of this dam helped cause the downstream Gracie Creek Road Dam to overtop and fail. The two-lane state highway which washed out ran along the top of the Gracie Creek Road Dam. This dam was removed from the dam inventory after it breached in 1999. It was rebuilt without the knowledge of the NE DNR. A downstream two-lane state highway was washed away. RE O 20 ft 0.00 1960 NE00000 GRACIE CREEK 0 0 NE DNR
BREDTHAUER DAM NE L Failure 06/12/2010 Hydrologic/Flooding Overtopping NE00264-1222 Heavy rainfall runoff. 339 85 Water/sewer lines 600 An irrigation company intentionally breached one of their canals upstream of the dam which may have helped cause the dam to fail. Most of the flooding in North Loup was due to the heavy rainfall runoff. We do not know how much the failure of the dam contributed to the flooding. Water and sewer service were disrupted. RE 26 ft 0.00 NE00264 0 0
ATKINSON DAM RECONSTR NE L Non-Failure 06/12/2010 Hydrologic/Flooding Overtopping NE00410-1224 The dam was overtopped but did not fail. The dam was rebuilt in 1992 after it breached through the emer spwy. No 0 0 0 L RE R NR 13 ft 360.00 19.00 1992 NE00410 ELKHORN RIVER 42.5379 -99.0005 NE DNR
BURWELL SUMTER DIVERSION DAM NE L Non-Failure 06/12/2010 Hydrologic/Flooding Overtopping NE01464-1225 The dam was overtopped but did not fail. No 0 0 0 This is a diversion dam used to divert water into an irrigation canal. The NE DNR dam safety program does not have jurisdiction over diversion dams. RE I NR 21 ft 1100.00 1.00 1933 NE01464 NORTH LOUP RIVER 41.7909 -99.131 NE DNR
TAYLOR ORD DIVERSION DAM NE L Failure 06/12/2010 Hydrologic/Flooding Overtopping NE01480-1226 The dam was overtopped and was completely washed away. No 0 0 170 RE I NR 10 ft 170.00 1.00 1939 NE01480 NORTH LOUP RIVER 41.7947 -99.4603 NE DNR
HARDENBROOK DIV DAM NE L Non-Failure 06/12/2010 Hydrologic/Flooding Overtopping NE01509-1227 The dam was overtopped and was severely damaged, but did not fail. No 0 0 0 The NE DNR dam safety program does not have jurisdiction over diversion dams. RE 10 ft 0.00 1939 NE01509 0 0
ERICSON DAM NE L Failure 06/13/2010 Hydrologic/Flooding Spillway Erosion/Head Cutting NE00274-1223 Breached through the emer spwy. The emer spwy was redesigned and modified in 2003. Once the topsoil was removed, the underlying soil was mostly sand. It took about 3 hours for the headcut to advance all the way upstream through the emer spwy. No 0 0 750 At least ten county road bridges were damaged or washed away. A two-lane U.S. Highway was overtopped for awhile but was not damaged. P RE C NR 35 ft 968.00 123.00 1916 NE00274 CEDAR RIVER 41.7584 -98.6529 2004 NE DNR
LOWER KLONDIKE PA H Non-Failure 07/16/2010 Seepage/Internal Erosion Excessive/Increased Seepage PA00751-3176 OBSERVATION OF NEW, STEADY SEEPAGE AT DOWNSTREAM END OF SPILLWAY & LOW-LEVEL DRAIN PIPE. No 0 0 OWNER DIRECTED TO LOWER LAKE AT 1 FT PER DAY & TO MONITOR SEEPAGE PLAN TO COLLECT & MONITOR SEEPAGE REC'D 11/12/10. NO CURRENT DRAWDOWN. OUTLET SYSTEM REPAIR NEEDED. P RE R Y 19 ft 254.00 22.00 1960 PA00751 LEHIGH RIVER 41.2533 -75.4508 2007 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
LAKE DELHI DAM IA S Failure 07/25/2010 Unknown Under Investigation IA01297-600 Heavy rain in the area caused the dam to overtop and fail. The dam had three gates at least one of which was not operating properly and only partially open at the time of the flood. No 900 1100 None 9930 NID indicates that the dam did not have an EAP.
 P PG R NR 55 ft 9920.00 440.00 1922 IA01297 MAQUOKETA RIVER 42.4081 -91.3454 IOWA DNR 12:00 AM
ROSE HILL DAM SD L Failure 07/30/2010 Hydrologic/Flooding Overtopping SD00759-3252 No 0 Unknown low hazard dam so was not required to have an EAP, also no habitable structures in the downstream flood plain S RE R NR 38 ft 950.00 32.00 1935 SD00759 TR-SAND CREEK 0 0 SD DENR No SD DENR
BOWEN IRRIGATION POND DAM GA U Non-Failure 08/06/2010 Unknown Unknown GA05016-280 test

test 		No test P RE R NR 10 ft 104.00 14.00 GA05016 CYPRESS CREEK 31.4389 -83.4083
BOWEN 2 VA Failure 08/06/2010 Structural Stability Cracking VA00000-281 test 0.00 VA00000 0 0
LAKE LEHMAN PA H Non-Failure 08/23/2010 Seepage/Internal Erosion Excessive/Increased Seepage PA00341-3214 NEW & SIGNIFICANT SEEPAGE WAS OBSERVED ALONG A GUIDE WALL, DOWNSTREAM END OF OUTLET PIPE. No 0 0 OWNER ISTRUCTED TO LOWER LAKE AT RATE OF 1 FT PER DAY. LAKE MAINTAINED 10' BELOW NORMAL POOL. THE COMPANY DECIDED TO REMOVE THE DAM UNDER WAIVER TO BREACH; COMPLETED IN 2014-15. P RE SR 52 ft 0.00 PA00341 POWDER MILL RUN 39.5147 -76.5139 PADEP PA Dam Safety
GABRIELS OVERLOOK DAM TX H Non-Failure 09/08/2010 Hydrologic/Flooding Overtopping TX07254-2715 OVERTOPPING, DID NOT BREACH P RE Y 25 ft 114.00 11.00 1964 TX07254 TRIBUTARY OF SAN GABRIEL RIVER 30.6195 -97.8003 TCEQ TX DEQ
SAN GABRIELS OVERLOOK DAM TX S Non-Failure 09/08/2010 Hydrologic/Flooding Overtopping TX00000-1220 Dam overtopped, but did not breach No 0 0 RE R 25 ft 0.00 1960 TX00000 TRIBUTARY OF SOUTH FORK SAN GABRIEL RIVER 0 0 TCEQ
HURLEY LAKE DAM TX S Failure 11/29/2010 Hydrologic/Flooding Overtopping TX00000-1221 Dam overtopped. Dam breached No 0 0 Water/sewer lines Unknown 15 Only access to a subdivision washed out Dam not in the state inventory. Public drinking water, telephone service, and electrical services washed out. RE R 20 ft 0.00 TX00000 TRIBUTARY OF FLAT CREEK 0 0 TCEQ
MARIANO BORO. INTAKE DAM PA L Failure 12/01/2010 Deterioration or Poor Condition Overtopping PA00000-3241 CONCRETE DAM FAILED ON RIGHT ABUTMENT. EROSION ALONG DAM WAS A THREAT TO ADJACENT STATE ROAD. No 0 0 POOL DRAWN DOWN WITH PUMPS. EMERGENCY PERMIT REPAIRS BY BORO USED CONCRETE BAGS & REBAR. IN 2016 PENNDOT REPAIRED DAM, BUT DOWNSTREAM SLOPE FAILED AGAIN. BREACH OF DAM IS PENDING AS OF 2018. L CN S 6 ft 0.00 PA00000 TENMILE CREEK 40.011 -80.0542 PADEP PA Dam Safety
SOUTH CREEK - WASHINGTON COUNTY UT H Non-Failure 12/21/2010 Hydrologic/Flooding Slope Stability UT00588-910 Heavy rainfall resulted in a surface slump of the downstream slope just below the crest Yes 50 0 None $100,000 to $500,000 0 Estimated evacuation of 50 to 100 people
Highway closure during EAP implementation
Successful EAP operation, actual failure avoided 		P RE I Y 91 ft 2250.00 0.00 1988 UT00588 SOUTH CREEK 37.1472 -112.985 12:00 AM
CLUB 20 LAKE DAM TX S Non-Failure 01/01/2011 Seepage/Internal Erosion Sinkhole TX02841-2714 SINKHOLE AT TOE WITH SEEPAGE P RE IR Y 29 ft 269.00 23.00 1962 TX02841 TR-GRAND SALINE CREEK 32.5386 -95.7741 2002 TCEQ TX DEQ
STEHLIK DAM 4436 NE U Failure 01/01/2011 Unknown Unknown NE04436-3034 None 2011 breach discovered during scheduled inspection in 2016. Cause unknown. Date Approximated P C NR 18 ft 64.00 2.00 1960 NE04436 40.609 -96.9949 NE DNR No NeDNR
SAGE CREEK DAM MT U Failure 02/14/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting MT00000-981 Rain and snowmelt resulted in headcut of spillway and eventual failure over several weeks. No 0 0 Roads local road flooded RE 0.00 MT00000 SAGE CREEK 47 108 MTDNRC
GATES MILLS LOW HEAD DAM OH Failure 02/28/2011 Hydrologic/Flooding Overtopping OH00000-980 high flows washed out the dam No some homes evacuated according to news reports
the dam was exempt from state regulatory jurisdiction 		PG R 7 ft 0.00 1903 OH00000 CHAGRIN RIVER 41 81 ODNR - DSWR 12:00 AM
OHIO POWER COMPANY POND DAM MUR-3 OH S Non-Failure 02/28/2011 Deterioration or Poor Condition High Reservoir Level OH00845-970 Obstructed spillway caused the lake level to rise - owner performed controlled breach No 0 RE T N 59 ft 818.00 27.00 1962 OH00845 SIMS RUN 39.91 -81.72 DEPARTMENT OF NATURAL RESOURCES
BURTON LAKE DAM OH S Non-Failure 02/28/2011 Hydrologic/Flooding Overtopping OH01611-968 heavy rains overtopped the dam - no significant damage Yes 0 L RE R Y 9 ft 447.90 18.00 1952 OH01611 TRIBUTARY TO BRIDGE CREEK 41.43 -81.18 DEPARTMENT OF NATURAL RESOURCES
GORGE PLANT DAM OH H Non-Failure 03/05/2011 Hydrologic/Flooding High Reservoir Level OH00481-971 High flows over the dam reached level to activate "EAP watch" Yes 0 U CN S Y 57 ft 1149.00 34.00 1912 OH00481 CUYAHOGA RIVER 41.12 -81.49 DEPARTMENT OF NATURAL RESOURCES
OSAGE LAKE DAM OH S Non-Failure 03/05/2011 Deterioration or Poor Condition Erosion OH00617-969 corrosion in riser caused water level to drop and erosion of u/s slope of the embankment Yes 4 PP RE R Y 28 ft 146.00 11.00 1955 OH00617 TRIBUTARY TO RIVER STYX 41.06 -81.77 DEPARTMENT OF NATURAL RESOURCES
FOWLER FINCH POND DAM NY L Non-Failure 03/10/2011 Seepage/Internal Erosion Piping NY01046-960 Dam was breached because it was in the process of failing due to internal erosion - High water (rainfall event) - well within spillway capacity No 0 0 None P RE R N 16 ft 200.00 21.00 1958 NY01046 TR-CARRS CREEK 42.3106 -75.2375 NYS DEC
LOWER ALFORD LAKE PA H Non-Failure 03/11/2011 Seepage/Internal Erosion Excessive/Increased Seepage PA00053-3207 CALL FROM A CONCERNED CITIZEN REGARDING A POTENTIAL PROBLEM. SEEPAGE AND SPILLWAY FLOW OBSERVED. No 0 0 DEP INSPECTOR VISIT TO DAM ON THE NEXT MORNING CONFIRMED NO CHANGE IN PRE-EXISTING SEEPAGE. THIS INCIDENT WAS NOT CRITICAL, BUT DAM NEEDS REPAIRS AND POSES A THREAT TO DOWNSTREAM HOMES. P MSREST R Y 15 ft 315.00 34.00 1919 PA00053 MARTINS CREEK 41.8069 -75.7742 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety
BIG ELK LAKE PA S Non-Failure 03/28/2011 Seepage/Internal Erosion Excessive/Increased Seepage PA00056-3205 PA DAM SAFETY INFORMED OF CLEAR SEEPAGE EXITING ON LEFT SIDE OF A SPILLWAY. No 0 0 0 DEPRESSION AREA ISOLATED BY COFFER DAM AND BACKFILLED WITH CONCRETE AS A TEMPORARY REPAIR. "NOT AN IMMINENT EMERGENCY SITUATION" P MSREST RS Y 12 ft 740.00 79.00 1860 PA00056 ELK LAKE STREAM 41.7528 -75.9547 2006 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 2 DAYS PA Dam Safety
SCNONAME 32095 SC H Non-Failure 03/30/2011 Deterioration or Poor Condition Animal Activity SC01361-982 Animal Burrow through dam P RE R Y 23 ft 93.00 6.00 1950 SC01361 TR-KOON BRANCH 34.0633 -81.19 1989 SCDHEC
PINE GROVE CA L Non-Failure 04/01/2011 Seepage/Internal Erosion Sinkhole CA00541-1381 leakage at left upstream face/abutment area of main embankment, 2 sinkholes approx 1-2 ft in diameter No 0 0 0 U RE S NR 42 ft 324.00 9.00 1911 CA00541 L SHADY CREEK 39.3191 -121.129 Division of Safety of Dams
LAKE LENAPE DAM NJ H Non-Failure 04/04/2011 Other Other NJ00450-964 Cofferdam was undermined during construction Yes 0 State responded and made owner investigate and resolve problem L PGRE R Y 29 ft 6610.00 300.00 1879 NJ00450 GREAT EGG HARBOR RIVER 39.4548 -74.7353 NJDEP 12:00 AM
CLAUSEN SPRINGS DAM ND H Non-Failure 04/08/2011 Hydrologic/Flooding High Reservoir Level ND00029-963 flow through the emergency spillway No 0 0 L RE FR Y 52 ft 1274.60 42.00 1967 ND00029 SPRING CREEK 46.6832 -98.0369 1968 NDSWC
BURLINGTON DAM #1 ND L Non-Failure 04/11/2011 Hydrologic/Flooding Piping ND00275-962 The Des Lacs River was at flood stage, causing the dam to be in danger of overtopping. The dam was also experiencing piping in a couple of locations. No 200 0 None 0 Approximately 200 were advised to evacuate (this number was reported in the news, but I don't have confirmation of this number). The dam was only part of the reason these people were advised to evacuate - there was already major flooding occuring in the river. L RE IR NR 27 ft 566.90 38.00 1935 ND00275 DES LACS RIVER 48.2852 -101.455 1957 NDSWC
HENION POND DAM NJ S Non-Failure 04/17/2011 Seepage/Internal Erosion Sinkhole NJ00224-966 Sinkhole developed along crest of earth embankment Yes 0 P PGRE R Y 10 ft 45.00 1926 NJ00224 PEQUANNOCK RIVER-TR 41.019 -74.363 NJDEP 12:00 AM
DUNDEE NJ L Non-Failure 04/17/2011 Hydrologic/Flooding Other NJ00243-967 EAP was activated due to high water levels at the spillway Yes 0 P MSPGCN HS Y 16 ft 3584.00 224.00 1854 NJ00243 PASSAIC RIVER 40.8833 -74.1271 NJDEP
ORADELL RESERVOIR DAM NJ H Non-Failure 04/17/2011 Hydrologic/Flooding High Reservoir Level NJ00258-965 EAP was activated due to high water levels at the spillway Yes 0 P PGRE S Y 25 ft 796.00 1922 NJ00258 HACKENSACK RIVER 40.9562 -74.0291 NJDEP 12:00 AM
WILLOW CREEK DAM NV L Non-Failure 04/19/2011 Hydrologic/Flooding Other NV00054-1388 High Precipitation in area during spring snowpack runoff activated flow through emergency spillway. Yes 0 0 Access to local (Hollister) mine potentially impacted, no damage actually occurred.
Owner and local downstream interests aware of potential for trouble. Activation process funcitoned well. Recreationists informed of difficult travel in area and potential for flooding.
Swift access under seasonally wet conditions best done by helicopter. 		P CNER IRFC Y 58 ft 8000.00 480.00 NV00054 WILLOW CREEK 41.21 -116.536 1912 NEVADA DWR
COLUMBINE CA H Non-Failure 04/20/2011 Seepage/Internal Erosion Spillway Pipe Failure Piping CA00682-1382 leakage along continuous void below unencased spillway pipe
leakage near exposed spillway overflow pipe on downstream embankment face 		No 0 0 None U RE IS NR 24 ft 62.00 3.00 1963 CA00682 OFFSTREAM 37.3542 -121.793 Division of Safety of Dams 12:00 AM
CAROLINA LAKE DAM NC S Non-Failure 04/25/2011 Deterioration or Poor Condition Spillway Riser Failure NC03561-961 Structural failure at base of aging and deteriorated CMP principal spillway riser drained reservoir through principal spillway barrel Yes 0 0 None 100 NOAA issued a flash flood warning in the area after consultation with local Emergency Management agency P RE R N 24 ft 230.00 0.00 NC03561 HERDS CREEK 35.3578 -79.2959
SUNFISH POND PA L Failure 04/27/2011 Unknown Overtopping PA00000-3231 MOST OF STONE RETAINING WALL ON THE D/S SIDE OF THE DAM COLLAPSED. 0 0 0 0 DAM WAS BREACHED TO PREVENT POTENTIAL LOSS OF DOWNSTREAM CULVERT. S STMS F 11 ft 0.00 PA00000 TR MIDDLE CREEK 40.1611 -76.1457 PADEP 1 DAY No PA Dam Safety
LAKE OF THE HILLS DAM MO H Non-Failure 04/30/2011 Structural Stability Sliding MO30077-1386 Small slide on downstream face during intense rainfall event No 0 0 P RE R N 37 ft 1143.00 73.00 1960 MO30077 TR CANE CREEK 37.2506 -90.0281 1993 DAM AND RESERVOIR SAFETY PROG
LAC MICHEL DAM MO H Non-Failure 04/30/2011 Structural Stability Sliding MO30285-1385 Small slide on downstream face during intense rainfall event No 0 0 P RE R N 41 ft 99.00 10.00 1971 MO30285 TR BIG RIVER 37.9112 -90.6271 1997 DAM AND RESERVOIR SAFETY PROG
SEVEN LAKES DAM #3 MO H Non-Failure 04/30/2011 Structural Stability Sliding MO31032-1384 Small slide on downstream face during intense rainfall event No 0 0 P RE R Y 45 ft 1300.00 61.00 1944 MO31032 GOOSE CREEK 37.2544 -90.6352 DAM AND RESERVOIR SAFETY PROG
TURNER'S DREAM LAKE DAM MO H Non-Failure 04/30/2011 Hydrologic/Flooding Overtopping MO31108-1387 Headcut erosion/Overtopping No 0 0 The dam has a small diameter drop inlet spillway that controls the lake level and open channels at both ends of the dam. One of these channels had experienced headcut erosion to the point where the erosion scarp was only about 20 feet from the reservoir. In an apparent attempt to divert water into the other channel, he built a berm through the channel in question. Apparently the berm overtopped and failed, letting water once again flow through the channel and continue head cutting. At some point, it appears that the reservoir overtopped the dam crest slightly but no visible damage was seen on the embankments. P RE R N 35 ft 988.00 50.00 1977 MO31108 TR-BARNES CREEK 37.1409 -90.2424 NONE
SLIVER SPRING LAKE DAM NJ L Failure 05/23/2011 Hydrologic/Flooding Overtopping NJ00000-1195 High water levels overtopped the dam, causing the dam to fail 0 9 RE R 21 ft 0.00 1930 NJ00000 MUSCONETCONG RIVER 0 0 NJDEP 12:00 AM
GLENDALE LAKE DAM IN S Failure 05/30/2011 Seepage/Internal Erosion Piping IN00320-1041 Substantial internal erosion failure. A large void exists under the left end of the spillway system. No foundation material remains under a large portion of the concrete spillway. No 0 0 None 28 There is footage on You-tube. P RE R N 14 ft 54.00 6.00 1945 IN00320 UNNAMED TRIBUTARY DEER CREEK 40.5 -85.6708 IDNR
HEUVELTON NY S Failure 06/07/2011 Malfunction of Equipment/Gate Gate/Valve Failure NY00411-1040 A rubber bladder gate was punctured and deflated. Yes 0 0 None DEC-fisheries(?) investigating potential environmental damage. P CNPG H Y 35 ft 405.00 239.00 1923 NY00411 OSWEGATCHIE RIVER 44.6177 -75.4048 1993 NYS DEC Y
MCDILL WI S Non-Failure 06/10/2011 Seepage/Internal Erosion Piping WI00176-1330 Depression was noted in downstream embankment adjacent to the outlet structure. Die testing showed evidence of piping through embankment. Drawdown was initiated. No 0 0 None Temporary closure of County Highway over dam L CNRE Y 21 ft 2160.00 261.00 1855 WI00176 PLOVER 44.4928 -89.5558 1962 WIDNR Y
SALINAS RIVER DIVERSION CA L Non-Failure 06/17/2011 Seepage/Internal Erosion Erosion CA00000-1383 High flows through the regulating Obermeyer gate scoured and piped the left abutment area.
A sinkhole formed in the left abutment, downstream of the dam. A void underneath the fish ladder and material piped into river. 		0 0 None I 16 ft 0.00 2006 CA00000 SALINAS 37 -122 CA DSOD
WALTONVILLE LAKE DAM IL S Failure 06/26/2011 Unknown Under Investigation IL00169-1081 Water flowing from embankment at downstream toe. Initial flow crossed state highway.
Under Investigation/Animal Activity 		No 0 0 Roads 15 L RE R N 22 ft 153.00 18.00 IL00169 TRIB BUCK CREEK 38.2083 -89.0417 IDNR 12:00 AM Y
BILLS RANCH LAKE CO S Non-Failure 07/03/2011 Hydrologic/Flooding Overtopping Animal Activity CO00000-1365 Runoff from high snowpack and spillway blockage resulted in overtopping of the dam - rodent damage in the crest No 0 0 None 3 day event - Minor flood damage to streets downstream due to runoff
No evacuations. Several homes were put on notice to be prepared to evacuate by the Town of Frisco
Town of Frisco and Summit County LEM contacted. Owner instructed to place sandbags and plastic sheets to alleviate overtopping damage and monitor daily through incident. Owner removed flashboards and removed obstructions. Sandbags and plastic did help alleviate overtopping 		RE R 8 ft 0.00 1930 CO00000 MINERS 40 106 CO Division of Water Resources
WOODCLIFF LAKE DAM NJ H Non-Failure 07/06/2011 Seepage/Internal Erosion Excessive/Increased Seepage NJ00247-1163 New seepage found at dam - Small leak observed in the floor of the gate house Yes 0 0 Unknown Unknown P PGRE S Y 38 ft 117.00 1906 NJ00247 PASCALK BROOK 41.0128 -74.0493 NJDEP 12:00 AM
FOREST LAKE DAM NC H Non-Failure 07/07/2011 Deterioration or Poor Condition Spillway Chute Failure NC01691-1080 A portion of the concrete chute spillway detached and fell into the void beneath approximately five feet in depth. Yes 32 None 30 30 acre-feet released by pumping. Embankment did not fail.
Portion of an apartment complex and a number of homes flooded due to pumped release.
Forced temporary closure of a major Charoltte thoroughfare. 		P RE R Y 15 ft 60.00 0.00 NC01691 MCALPINE CREEK-TR 35.205 -80.719 NCDENR Y
LOS ALAMOS CANYON DAM NM H Non-Failure 07/08/2011 Hydrologic/Flooding Other NM00299-1366 Dam was under rehabilitation construction when the site was evacuated and the area back-burned to prevent a wildfire from reaching Los Alamos. The overflow spillway had been demolished and the dam crest lowered during construction. 0 0 Water/sewer lines A majority of the watershed was burned and the dam is now volunerable to overtopping. A by-pass channel was constructed through the left abutment to carry flood flows from the burnt watershed around the dam. The alteration of the site required a redesign effort that is underway. Los Alamos County watersupply line L RE S Y 40 ft 33.00 2.00 1943 NM00299 LOS ALAMOS CANYON 35.8835 -106.354 2013 Office of the State Engineer
BARRY LAKES #1 DAM NJ L Non-Failure 08/01/2011 Seepage/Internal Erosion Piping NJ00509-1164 Water flowing along outlet pipe/settlement along outlet pipe No 0 0 Unknown Unknown P PGRE R N 15 ft 59.00 20.00 1955 NJ00509 WAWAYANDA CREEK-TR 41.1969 -74.4412 NJDEP 12:00 AM
SUNSET LAKE DAM NJ H Non-Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00063-1180 overtopped, severe erosion of downstream slope and failure of gabion slope protection Yes 50 0 Roads 0 County Road (embankment) closed L PGRE R Y 20 ft 94.00 1927 NJ00063 COHANSEY RIVER 39.4468 -75.2353 NJDEP
SEELEY'S MILL POND DAM NJ S Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00065-1182 overtopped and breached No 0 Roads 186 Road collapsed/closed PGRE I N 18 ft 69.00 NJ00065 COHANSEY RIVER 39.4876 -75.2584 NJDEP
CENTERTON LAKE DAM NJ S Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00439-1183 overtopping resulting in severe erosion of embankment Yes 0 Unknown unknown 132 P PGRE R Y 12 ft 576.00 37.00 1942 NJ00439 MUDDY RUN 39.525 -75.1699 NJDEP
CUSHMAN LAKE DAM NJ L Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00447-1181 Overtopped, breach of emergency spillway 0 Unknown unknown 400 P PGRE R NR 17 ft 62.00 NJ00447 HOSPITALITY BRANCH 39.5956 -74.8668 NJDEP
SUNSET LAKE DAM NJ S Non-Failure 08/14/2011 Hydrologic/Flooding Spillway Pipe Failure Erosion NJ00512-1166 erosion of embankment due to joint separation in outlet culvert Yes 0 0 Unknown Unknown P PGRE R Y 8 ft 50.00 1950 NJ00512 WHITE HALL BRANCH 39.6349 -74.9644 NJDEP
BURNT MILL POND DAM NJ S Non-Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00632-1165 overtopped, severe erosion of embankment near spillway No 0 0 Unknown Unknown L PGRE R Y 9 ft 40.00 9.00 NJ00632 BURNT MILL BRANCH 39.5318 -75.0443 NJDEP
SUNSET LAKE RACEWAY DAM NJ H Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00764-1167 earthen embankment overtopped and breached Yes 50 Unknown Unknown 417 L PGRE R Y 11 ft 103.00 1949 NJ00764 COHANSEY RIVER 39.4319 -75.2371 NJDEP
PEDLAR RIVER DAM VA H Non-Failure 08/23/2011 Seismic Other VA00905-1142 Obvious earthquake, stage I declared immediately after Yes 0 0 0 Visual inspection of dam performed, once it was determined there was no cracks, dislocations, or other signs of movement, EAP Stage 1 terminated. L PG RS Y 87 ft 4300.00 125.00 1964 VA00905 PEDLAR RIVER 37.67 -79.2767 DCR 12:00 AM
CASSVILLE DAM NJ S Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00606-2864 overtopped, embankment failure Irene No 0 Roads 0 County Road (embankment) closed P PGRE R Y 6 ft 14.00 NJ00606 SMALL BRANCH TOMS RIVER 40.1107 -74.3889 NJDEP NJ DEP
CEDAR BRIDGE DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Spillway Chute Failure NJ00000-1194 undermining of spillway Irene No 0 County road (embankment) closed 0.00 NJ00000 S. BRANCH METEDECONK-TR 0 0 NJDEP
SHANTY DRIVE DAM NJ L Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1196 erosion of downstream embankment possible due to overtopping or roadway runoff Irene No 0 0 RE R 9 ft 0.00 NJ00000 HAYNES CREEK-TR 0 0 NJDEP
LAKE HARTUNG DAM NJ L Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1197 Overtopped, erosion, corewall exposed Irene No 0 0 RE R 10 ft 0.00 NJ00000 RUSSIA BROOK 0 0 NJDEP
KENILWORTH #3 DAM NJ L Non-Failure 08/27/2011 Hydrologic/Flooding Sinkhole NJ00000-1198 Sinkhole developed along outlet culvert Irene 0 Roads 0 local roadway (embankment) temporarily closed R 6 ft 0.00 NJ00000 BARTON RUN-TR 0 0 NJDEP
PENNY POT LAKE DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1199 Overtopped Irene 0 R 6 ft 0.00 NJ00000 HOSPITALITY BRANCH 0 0 NJDEP
CASSVILLE DAM NJ S Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1200 overtopped, embankment failure Irene No 0 100 County Road (embankment) closed R 6 ft 0.00 NJ00000 SMALL BRANCH TOMS RIVER 0 0 NJDEP
LENARTOWICZ DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1201 Overtopping, embankment failure Irene No 0 1 R 7 ft 0.00 NJ00000 UNNAMED 0 0 NJDEP
STONE'S DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Piping NJ00000-1202 piping under spillway Irene No 0 CN R 9 ft 0.00 NJ00000 HAKIHOKAKE CREEK 0 0 NJDEP
PLEASANT MILLS DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00044-1187 overtopped, severe loss of embankment due to erosion into open pipe joint Irene Yes 0 Roads 0 County Road (embankment) closed P PGRE R Y 16 ft 45.00 NJ00044 HAMMONTON CREEK 39.636 -74.6607 NJDEP
SHADOW LAKE DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00090-1188 overtopped, embankment/road damage Irene No 0 0 L PGRE R Y 16 ft 83.00 1931 NJ00090 QUIOLEY CREEK 40.3528 -74.085 NJDEP
LINDY'S LAKE DAM NJ H Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00201-1184 Minor overtopping damage Irene No 0 P PGRE R Y 24 ft 20.00 NJ00201 WEST BROOK-TR 41.0745 -74.3707 NJDEP
LAKE NEEPAULIN DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00282-1161 overtopped, embankment damage Irene No 0 0 Unknown unknown L RE R Y 22 ft 143.00 13.00 1927 NJ00282 PAPAKATING CREEK 41.2145 -74.6257 NJDEP
SWANNANOA LAKE #1 (SOUTH) DAM NJ H Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00311-1160 overtopped, embankment damage Irene No 0 0 Unknown unknown P MS R Y 15 ft 51.00 1914 NJ00311 WEST BRANCH ROCKAWAY RIVER 41.0078 -74.5179 NJDEP
SAFFIN POND DAM NJ S Failure 08/27/2011 Hydrologic/Flooding Piping NJ00339-1193 seepage/piping failure during construction due to poor embankment materials Irene No 0 95 L PGRE R Y 24 ft 147.00 14.00 1930 NJ00339 WELDON BROOK 41.0043 -74.587 NJDEP
TOMLINSON MILL DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Sinkhole NJ00627-1186 Sinkhole developed along outlet culvert Irene No 0 Roads 0 local roadway (embankment) temporarily closed L PGRE R Y 11 ft 10.00 NJ00627 BARTON RUN 39.8656 -74.8948 NJDEP
MULLICA HILL POND DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00639-1189 overtopped, erosion of d/s slope Irene No 0 Roads 0 State Highway (NJ Rt 322) temporarily closed S PGRE R N 19 ft 10.00 1922 NJ00639 RACCOON CREEK 39.7346 -75.2213 NJDEP
SCENIC LAKE DAM NJ L Non-Failure 08/27/2011 Hydrologic/Flooding Piping NJ00678-1191 seepage, portion of d/s slope failed Irene No 0 0 P PGRE R NR 35 ft 96.00 8.00 NJ00678 WALLKILL RIVER-TR 41.1837 -74.5632 NJDEP
NEW JERSEY NO NAME # 89 DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00736-1192 overtopped, embankment failure Irene No 0 70 L PGRE R NR 15 ft 98.00 10.00 1970 NJ00736 CROSSWICKS CREEK-TR 40.0566 -74.5475 NJDEP
DIAMOND MILL POND DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00926-1190 overtopped, loss of embankment to corewall Irene No 0 None 0 L PGRE R N 9 ft 24.00 4.00 1937 NJ00926 RAHWAY RIVER 40.7311 -74.3071 NJDEP
UNION MILL LAKE DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Sinkhole NJ00971-1185 Sinkhole developed along outlet culvert Irene No 0 Unknown Unknown P RE R N 13 ft 73.00 4.00 NJ00971 BARTON RUN-TR 39.8528 -74.9102 NJDEP
SHELBURNE NH L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NH00052-1148 High flows overtopped the dam,eroded abutments and downstream of cutoff walls and flooded powerhouse Irene 0 0 Bridges 0 Lost power generation from dam. Minor damage to North Road bridge immediately downstream of dam.
Short term closing of North Road bridge due to overtopping 		P CNPG HC NR 17 ft 960.00 210.00 1906 NH00052 ANDROSCOGGIN RIVER 44.4042 -71.1157 1990 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y
CAMPTON POND HYDRO DAM NH H Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NH00130-1143 overtopping of the left side upstream training wall, earthen portion Irene Yes 200 0 Roads 0 many mobile homes received flooding to the underneath areas, insulation etc.
Mobile home community evacuated, Per fire chief 90 homes, 200 people
Youtube video of the dam can be found with "Campton dam" search 		F CN H Y 39 ft 650.00 60.00 1890 NH00130 MAD RIVER 43.8619 -71.6325 2004 12:00 AM Y
COY PAPER MILL NH S Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NH00140-1144 Water up to decks of plant Irene Yes 0 0 0 P CNPG H Y 33 ft 150.00 17.00 1922 NH00140 SUGAR RIVER 43.3905 -72.3766 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU 12:00 AM
DELLS POND OUTLET DAM NH H Non-Failure 08/28/2011 Hydrologic/Flooding Sinkhole NH00145-1147 Sinkhole developed adjacent to the usptream left spillway abutment wall Irene Yes 0 0 L ER R Y 20 ft 80.00 3.00 1935 NH00145 DELLS BROOK 44.3122 -71.7977 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y
GLEN ROAD NH S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NH00159-1146 EAP activation, dam is overflowing Irene Yes 0 P CNPG H Y 16 ft 10.20 2.00 1988 NH00159 MASCOMA RIVER 43.635 -72.3043 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU 12:00 AM
CUMMINS POND DAM NH L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NH00462-1145 Local first responders assisted the dam owner with sandbagging the dam's crest to avoid overtopping. Owner also excavated a 20" wide channel away from dam to allow for additional outflow.
Freeboard at the dam reduced to 1" during the height of the storm 		Irene Yes 0 0 None none 0 P ER R NR 13 ft 1090.00 136.00 1880 NH00462 MASCOMA RIVER 43.7777 -72.0155 2008 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU 12:00 AM Y
LINCOLN SEWAGE LAGOON NH S Non-Failure 08/28/2011 Hydrologic/Flooding Unknown NH00590-1149 Visited the site 8/31/11 from 8am to 8:30 am to inspect river revetment system for damage. High flows caused further erosion of the revetment and completely failed a culvert headwall. Lagoon was not breached. Irene Yes 0 0 0 L ER O NR 19 ft 126.00 10.00 1987 NH00590 NA 44.0372 -71.6741 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y
MUDMILL POND DAM DE Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping DE00000-1209 Dam overtopped & caused minor to moderate erosion at the top of the downstream slope along the road edge, along the entire length of the dam. Emergency repairs were made to the roadway. Irene No 0 0 None 0 0.00 DE00000 0 0
MASSEYS MILL POND DAM DE L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping DE00029-1203 Overtopping caused failure of a training wall in the downstream channel and minor erosion in a few areas at top of downstream embankment along edge of road. No emergency repairs were necessary. Irene No 0 0 None unknown 0 Dam overtopped before daylight on 8/28/2011; depth of flow and length of time are unknown. Masseys Mill Pond Dam is directly upstream from Garrisons Lake Dam, and overtopping flow from Masseys most likely contributed to Garrisons overtopping. S REPG RF NR 12 ft 490.00 36.00 1933 DE00029 LEIPSIC RIVER 39.2395 -75.6175
GARRISONS LAKE DAM DE H Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping DE00030-1204 Dam started overtopping around 4 am, and overtopping continued until 10 or 11 am. Overtopping flow was confined to one location and due to the clay core of the dam only minor erosion occurred. Irene No 0 0 None 0 Adequate warning was provided to remove spillway flashboards several days prior to the storm to lower pond level in advance, which helped to minimize damage.
Eroded areas were sandbagged on 8/29/2011 as a temporary measure to prevent further erosion. 		S REPG RF N 11 ft 1164.00 86.00 1964 DE00030 LEIPSIC RIVER 39.244 -75.5884 DNREC 12:00 AM
BLAIRS POND DAM DE H Non-Failure 08/28/2011 Hydrologic/Flooding Erosion DE00070-1205 Prolonged discharge at a higher than normal rate through a concrete overflow spillway exacerbated erosion of a known void in the soil beneath the spillway. Irene No 0 0 None 0 Void was discovered under the left downstream edge of the spillway during an inspection in August 2011, and had not been repaired prior to Irene. The immediate post-Irene inspection did not reveal any change in the size of the void, but 11 days after the storm a sinkhole developed near the left upstream corner of the spillway. The remaining flashboards were removed from the spillway to lower the pond level below the spillway elevation and the void was filled with concrete on 9/9/2011. Subsequent repairs will be made to seal open construction joints and cracks in the spillway slab, which are thought to be the source of leakage through the slab that caused the void to develop. S REPG RF N 15 ft 611.00 48.00 DE00070 BEAVERDAM BRANCH 38.904 -75.4848 DNREC
SNOWS BROOK DAM NH H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NH00901-1150 Reservoir level came to within several inches of overtopping Irene Yes 0 0 0 L CN R Y 17 ft 40.80 5.00 1976 NH00901 SNOWS BROOK 43.95 -71.5047 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y
WAPPINGERS FALLS NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00003-1314 EAP activated on 8/28 due to high flows, penstock damage. Hurricane Irene Irene Yes L MS HPNR Y 20 ft 700.00 100.00 1872 NY00003 WAPPINGER CREEK 41.6006 -73.92 1992 NYS DEC
MONROE RECREATION LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00036-1300 overtopped, downstream face missing some stones
Hurricane Irene 		Irene No L OTRE R Y 14 ft 68.00 13.00 1936 NY00036 RAMAPO RIVER 41.3242 -74.1869 NYS DEC
LAKE COHASSET UPPER DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00042-1299 overtopped and had minor damage
Hurricane Irene 		Irene No S R Y 25 ft 373.00 37.00 1924 NY00042 ARDEN BROOK 41.2761 -74.1142 NYS DEC
UPPER WARWICK DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00063-1292 dam was experiencing high flows and there was evidence that the dam had overtopped. Hurricane Irene.
 Irene No L RE S N 40 ft 80.00 5.00 1912 NY00063 TR-WAWAYANDA CREEK 41.2289 -74.3608 NYS DEC
NORMANSKILL NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00088-1312 Chief of police notified Dam Safety that the EAP has been activated due to high water levels. Hurricane Irene Irene Yes L CB HSRFP Y 39 ft 5000.00 430.00 1916 NY00088 NORMANS KILL 42.7113 -73.9607 NYS DEC
SCHAGHTICOKE NY S Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00118-1322 Brookfield Renewable Power (Owner) activated EAP Condition C ¿ High Flow, non-failure. Hurricane Irene Irene Yes P CNPG H Y 28 ft 795.00 150.00 1909 NY00118 HOOSIC RIVER 42.8936 -73.5887 2000 NYS DEC
JOHNSONVILLE NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00119-1323 Brookfield Renewable Power (Owner) activated EAP Condition C ¿ High Flow, non-failure. Dam did not overtop. Hurricane Irene Irene Yes P CNPG H Y 39 ft 6430.00 450.00 1909 NY00119 HOOSIC RIVER 42.9197 -73.5084 1989 NYS DEC
CLARK MILLS UPPER NY L Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00120-1321 EAP has been activated because of high flows during Hurricane Irene Irene Yes P CNCB HC NR 23 ft 875.00 89.00 1904 NY00120 BATTENKILL RIVER 43.1185 -73.555 1990 NYS DEC
VISCHER FERRY NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00170-1311 High water and seepage observed on earthen embankment. Hurricane Irene Irene Yes S CNPG HN Y 30 ft 27400.00 1050.00 1913 NY00170 MOHAWK RIVER 42.8048 -73.8455 1990 NYS DEC
GILBOA DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00176-1287 Record lake level behind the dam. Hurricane Irene. Irene Yes L MSRE S Y 183 ft 95575.00 1159.00 1926 NY00176 SCHOHARIE CREEK 42.3911 -74.45 NYS DEC
INDIAN KILL RESERVOIR DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00242-1309 Dam overtopped Hurricane Irene Irene Roads flooding a local road but road not believed damaged. LPS RE S Y 23 ft 728.00 52.00 1958 NY00242 INDIAN KILL 41.2367 -74.2083 NYS DEC
HELDERBERG LAKE DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00276-1294 High water during Hurricane Irene. Dam did not overtop. Irene Yes P RS Y 35 ft 330.00 27.00 1944 NY00276 TR-ONESQUETHAW CREEK 42.5972 -74.0125 NYS DEC
GOSHEN RESERVOIR #1 DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting NY00488-1291 spillway channel erosion, left embankment.
Hurricane Irene. 		Irene No L RE S Y 37 ft 867.00 66.00 1963 NY00488 TR-RIO GRANDE CREEK 41.3833 -74.3333 NYS DEC
ELK LAKE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00520-1310 Under construction -Damaged. Temporary coffer dam was overtopped. A large bog has floated into the existing spillway partially blocking the spillway. The basin received 10" on rain over approx. 6 hrs. Hurricane Irene
 Irene No P ERTC R N 23 ft 4200.00 525.00 1965 NY00520 TR-THE BRANCH 44.0225 -73.8308 NYS DEC
BATAVIA KILL WATERSHED DAM #4A NY H Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting NY00570-1295 Erosion observed on both auxiliary spillways.
Hurricane Irene. 		Irene L RE C Y 77 ft 2928.00 10.00 1967 NY00570 BATAVIA KILL 42.3322 -74.2478 2013 NYS DEC
MERRIEWOLD LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00572-1303 High water from Hurricane Irene Irene No L RE R Y 50 ft 96.00 10.00 1953 NY00572 SATTERLY CREEK 41.3753 -74.1853 NYS DEC
BATAVIA KILL WATERSHED DAM #3 NY H Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting NY00608-1297 Right auxiliary spillway eroded down by 50 feet but has not reached the control section of the spillway. Hurricane Irene. Irene No L RE C Y 74 ft 1415.00 5.00 1970 NY00608 TR-BATAVIA KILL 42.3211 -74.2325 NYS DEC
MCGREGOR DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting NY00614-1318 Peak flow was 4 ft over tertiary spillway. High flows scoured 6" to 12' of the sandstone bedrock at the base of the dam due to the impact of the spillway flow. Continued minor scouring beneath a number of concrete splash aprons. Hurricane Irene Irene No Two people killed when car drove over washed out highway culvert downstream of the dam. S CB R Y 37 ft 735.00 147.00 1968 NY00614 CHAZY RIVER 44.8689 -73.675 NYS DEC
BLENHEIM - GILBOA UPPER NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00691-1289 Record high water behind dam. Hurricane Irene. Irene Yes S RE HR Y 170 ft 18500.00 355.00 1974 NY00691 SCHOHARIE CREEK 42.4451 -74.4384 NYS DEC
BLENHEIM - GILBOA LOWER NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00692-1288 Record high water levels. Hurricane Irene. Irene Yes S RECNPG HR Y 165 ft 16330.00 430.00 1974 NY00692 SCHOHARIE CREEK 42.4538 -74.4555 NYS DEC
MINE LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00767-1306 dam had overtopped 6-12", erosion but structurally sound. Hurricane Irene Irene Yes F CN TSR Y 22 ft 235.00 25.00 1845 NY00767 BROOKS HOLLOW CREEK 41.2045 -74.0236 1982 NYS DEC
POPOLOPEN LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00768-1305 Overtopped at abutments but is still structurally sound. Hurricane Irene Irene Yes F RECNMS TSR Y 32 ft 1030.00 0.00 NY00768 POPOLOPEN CREEK 41.3553 -74.0525 1948 NYS DEC
SUMMIT STREET LAKE DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00847-1325 seepage though downstream embankment and high impoundment water level. Hurricane Irene Irene Yes Evacuation recommended. inspection found no damage L OT R Y 28 ft 264.00 16.00 1914 NY00847 AGAWAMUCK CREEK 42.2464 -73.6481 NYS DEC
UPPER CANDOR DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Piping NY00938-1282 Seepage/ piping in dam foundation seems to have increased and dam may have settled. Irene No L O N 7 ft 55.00 11.00 1920 NY00938 CATATONK CREEK 42.235 -76.3428 NYS DEC
WINNISOOK LAKE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Erosion NY00952-1290 fill eroded exposing original laid-up stone dam.
Hurricane Irene. 		Irene No P RE R Y 42 ft 135.00 6.00 NY00952 ESOPUS CREEK 42.0156 -74.4119 NYS DEC
POTAKE LAKE DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00970-1308 EAP activated because of high water levels. Damage to downstream culverts but not dam. Hurricane Irene Irene Yes U RE RS Y 22 ft 1149.00 93.00 1800 NY00970 TR-RAMAPO RIVER 41.1417 -74.2111 NYS DEC
DAVIES LAKE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00976-1284 County ¿ received report that dam was overtopping. Dam Safety contacted owner and was advised the dam was not damaged. Hurricane Irene. Irene No P RE R Y 10 ft 160.00 26.00 1956 NY00976 DAVIES BROOK 41.6183 -74.6031 NYS DEC
MOUNTAINDALE RECREATION LAKE DAM NY L Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00982-1285 Dam overtopped and breached
Hurricane Irene. 		Irene No L RE R N 16 ft 66.00 11.00 1973 NY00982 BRADEN BROOK 41.6969 -74.5181 NYS DEC
MIDDLE GREENWICH DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Chute Failure High Reservoir Level NY01070-1326 EAP has been activated due to high flows. There is water flowing though some cracks on the dam. Region 5 (RG) inspected dam on 8/30 and observed concrete wall has shifted. Hurricane Irene Irene Yes P H N 10 ft 80.00 9.00 1902 NY01070 BATTEN KILL 43.0864 -73.4956 NYS DEC
BARTLETT POND DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01114-1319 Dam overtopped by estimated 6" of water. Hurricane Irene Irene No L RE S N 14 ft 1447.00 70.00 1918 NY01114 BARTLETT BROOK 44.1 -73.5117 NYS DEC
RED HOOK MILLS DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01179-1313 dam was overtopped and now seeping. Hurricane Irene Irene No Some downstream residents reported evacuated. P OT R N 26 ft 104.00 12.00 NY01179 SAW KILL 42.0106 -73.8728 NYS DEC
LOCH LYALL DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01201-1317 Dam overtopped. Local erosion DS face. Big trees on dam now have exposed roots. Hurricane Irene Irene No P R N 12 ft 98.00 19.00 1950 NY01201 INDIAN BROOK 41.4156 -73.9072 NYS DEC
GUYMARD LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Sinkhole NY01219-1286 sinkhole noted, 2 ft diameter, over 4 ft deep, between road and fence near center of dam. Irene No LP RE R N 35 ft 600.00 33.00 1858 NY01219 TR-NEVERSINK RIVER 41.4319 -74.5958 NYS DEC
BELVEDERE LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01270-1283 Report that water was flowing over 4 feet over the dam.
Hurricane Irene. 		Irene No P OTRE R N 20 ft 210.00 26.00 1900 NY01270 TR-CHERRY VALLEY CREEK 42.745 -74.7603 NYS DEC
DUCK HOLE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01377-1293 the right log crib abutment completed washed out allowing impoundment to drain. Hurricane Irene. Irene S TC R N 14 ft 380.00 58.00 NY01377 COLD RIVER 44.14 -74.1083 NYS DEC
PENFIELD POND DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01488-1320 Left side dam had overtopped and dam suffered erosion to the left of the spillway. Hurricane Irene Irene No P RE PR Y 15 ft 1100.00 150.00 1980 NY01488 PUTNAM CREEK 43.9219 -73.5356 NYS DEC
ECHO LAKE DAM NY L Failure 08/28/2011 Hydrologic/Flooding Unknown NY13189-1800 the dam appears to have failed. 9/23/11 failure confirmed by DEC inspection. Hurricane Irene. Irene No 0 0 P MS R NR 12 ft 144.00 16.00 1880 NY13189 ARDEN BROOK 41.2717 -74.1406
SKY VIEW POND DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY13225-1302 overtopped and exit channel eroded, only minor damage
Hurricane Irene 		Irene No P RE R N 24 ft 25.00 3.00 1952 NY13225 TR-RAMAPO RIVER 41.3133 -74.1653 NYS DEC
SCHOONMAKER LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY13232-1304 Owner notified dam was overtopping during 8/28/11 week-end. Minor erosion on dam where it overtopped (8/31/2011). Headcutting has progressed to the mortared stone upstream face. Hurricane Irene Irene Yes P EROT R Y 16 ft 16.00 2.00 1912 NY13232 PERRY CREEK 41.4047 -74.1514 NYS DEC
LOWER CRAGSTON LAKE DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY13539-1315 Dam overtopped by less than 6", minor erosion experienced downstream of core wall at toe. Hurricane Irene Irene No F RE R N 10 ft 0.00 NY13539 UNKNOWN 41.3538 -73.9774 NYS DEC
BREAKNECK BROOK DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY13564-1316 Increased seepage identified by owner NYS Parks. High water during Hurricane Irene. Irene No R N 18 ft 48.00 5.00 NY13564 BREAKNECK BROOK 41.4489 -73.9633 NYS DEC
IDA LAKE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY13740-1324 DEC engineer inspected and observed that there has been minor overtopping. Hurricane Irene Irene No L OT R N 12 ft 95.00 10.00 1912 NY13740 POESTENKILL 42.7214 -73.6728 NYS DEC
WILLIAM CURTIS DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Other NY14790-1301 possible additional damage to already poor condition. Hurricane Irene
 Irene No P RE R Y 15 ft 10.00 2.00 1898 NY14790 PERRY CREEK 41.4075 -74.1544 NYS DEC
LILY POND DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY15089-1307 Overtopped but little or no damage. Overtopped at left abutment of the dam, appears to be an auxiliary spillway. Hurricane Irene Irene No P RE O Y 10 ft 10.00 1949 NY15089 TROUT BROOK 41.2822 -74.2461 NYS DEC
LAKE PLACIDA PA H Non-Failure 09/07/2011 Hydrologic/Flooding Overtopping Erosion PA01711-3217 OVERTOPPING IN TROPICAL STORM CAUSED MINOR DAMAGE TO EMBANKMENT ON RIGHT & LEFT SIDES OF SPILLWAY. TS Lee No 0 REHAB AND LARGER SPILLWAY PROJECT WAS COMPLETED. CONSTRUCTION CERTIFICATION REC'D IN 2015. A DAM REHAB PLAN HAD BEEN APPROVED PRIOR TO THE OVERTOPPING EVENT. P RE R Y 6 ft 18.00 3.00 1910 PA01711 TR CONOY CREEK 40.1531 -76.5894 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
MARTINS CREEK (PA-467) PA H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping Erosion PA00054-3224 OVERTOPPING IN TROPICAL STORM DAMAGED RIGHT SIDE OF SPILLWAY, TOP OF DAM, AND DOWNSTREAM SLOPE. TS Lee Yes 0 83 RIGHT SIDE OF SPILLWAY REPAIRED WITH CONCRETE WALL AND SPLASH PAD AS PER 2013 INSPECTION. DAM OVERTOPPED BY 4 TO 6 INCHES. EROSION GULLY ON DOWNSTREAM SLOPE WAS 6 FT WIDE AND 4 FT DEEP. L RE C Y 52 ft 180.00 1.00 1967 PA00054 TR MARTINS CREEK 41.7647 -75.7467 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety
CRAIGS POND DAM DE Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping DE00000-1208 Overtopping caused major damage to the roadway and downstream slope of the dam. Approximately 400 feet of the downstream slope and one lane of the roadway were washed out, but the dam was not totally breached.
No 0 0 $100,000 to $500,000 0 Dam started overtopping around 7 or 8 pm on 9/08/2011 and overtopping continued until about 8 am on 9/09/2011. The overtopping flow was reported to be higher than the top of the guardrail along the road across the crest of the dam, although this was not verified. The 0.00 DE00000 0 0 12:00 AM
HUDSON POND DAM DE H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping DE00023-1207 overtopped around 6 pm on 9/08/2011. 0 0 0 They removed several flashboards from the spillway and reported that the water level in the pond dropped quickly. Depth and duration of overtopping could not be determined. Dam was inspected on 9/13/2011 and evidence of overtopping flow was seen in one location on the dam crest, but no erosion or other damage was found. S REPG RF N 9 ft 169.00 20.00 1958 DE00023 CEDAR CREEK 38.8406 -75.4343 DNREC 12:00 AM
HEARNS POND DAM DE H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping DE00060-1206 Overtopping occurred in two separate low areas on the crest of the dam. Minor erosion occurred on the grass downstream slope near the left abutment, and some minor displacement of riprap occurred on the downstream slope near the right abutment. No 0 0 0 Dam started overtopping around 7 or 8 pm on 9/08/2011 and overtopping continued until about 8 am on 9/09/2011. Sandbags were placed across each of the low areas on 9/08/2011, which helped to spread out the overtopping flow and reduce erosion. S REPG RF N 14 ft 1434.00 24.00 1912 DE00060 CLEAR BROOK 38.6793 -75.594 2002 DNREC 12:00 AM
SOCIAL SECURITY WOODLAWN DAM MD Non-Failure 09/08/2011 Unknown Spillway Chute Failure MD00471-3087 Concrete chute spillway on earth embankment undermined, resulting in spillway damage and loss of embankment material. Yes RE 13 ft 10.00 0.00 MD00471 39.3108 -76.7248 MD DAM SAFETY MDE Dam Safety Program
BIG ELK LAKE PA S Non-Failure 09/08/2011 Hydrologic/Flooding High Reservoir Level PA00056-3223 EAP EVACUATIONS. OWNER PUT SANDBAGS, TWO LAYERS, ACROSS TOP OF DAM. WATER ROSE ABOVE FIRST LAYER. TS Lee Yes 0 15 6 0 None A DETAILED BREACH ANALYSIS IN 2016 USING LIDAR SHOWED DOWNSTREAM HOMES ARE NOT IMPACTED BY A DAM FAILURE. OVERTOPPING PREVENTED BY SANDBAGS. BY 4:30 PM, 9/8/11 WATER HAD RECEDED TO 6 INCH BELOW TOP OF DAM. P MSREST RS Y 12 ft 740.00 79.00 1860 PA00056 ELK LAKE STREAM 41.7528 -75.9547 2006 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety
SULLIVAN PA L Failure 09/08/2011 Hydrologic/Flooding Overtopping PA00358-3202 DAM IN MILDRED VILLAGE FAILED DURING TROPICAL STORM LEE CAUSING A SWATH OF DAMAGE ALONG RTE 220. TS Lee No 0 0 0 0 Roads Unknown DAM REMOVAL WAS APPROVED IN 2012 AND STREAM RESTORED TO FREE-FLOWING CONDITION. 100 P RE R NR 11 ft 123.00 3.00 1948 PA00358 BIRCH CREEK 41.4767 -76.3767 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY No PA Dam Safety
MILL PA H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping PA00711-3215 EAP EVACUATIONS DUE TO OVERTOPPING INUNDATION. AT THE TIME IT WAS UNCERTAIN WHETHER DAM HAD FAILED. TS Lee Yes 0 REMOVAL OF THE DAM IS SCHEDULED IN 2018 DAM HAS BEEN DRAWN DOWN SINCE 1986 S MS OR Y 25 ft 24.00 1.00 1937 PA00711 HOSPITAL CREEK 40.3286 -76.1114 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
LOCH ALSH RESERVOIR PA H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping PA00935-3191 TROPICAL STORM LEE CAUSED OVERTOPPING OF DAM WITH 5 INCHES RAINFALL IN 3 HOURS TS Lee Yes 0 0 L MSREST R Y 16 ft 41.00 6.00 1915 PA00935 TR WISSAHICKON CREEK 40.1558 -75.2047 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety
FARMVILLE DAM VA S Non-Failure 09/23/2011 Hydrologic/Flooding Spillway Chute Failure VA14717-1141 Excessive rainfall caused spillway to fail, dam did not fail No 0 0 0 13 school buses were re-routed as a precaution
dam is uncertified and does not have an EAP
VDOT, Dam Safety and county officials (Prince Edward County) worked very well together to determine potential impacts if the dam were to fail 		P RE R N 22 ft 300.00 12.00 VA14717 TANYARD BR. OF BRIERY CREEK 37.2383 -78.42 DCR 12:00 AM
LAKE HAZLE DAM MS H Non-Failure 09/26/2011 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole MS00503-1120 Sinkhole developed near left abutment due to failure of large CMP culvert which diverts drainage water around dam Yes 0 0 None 0 EAP activated for potential (developing) failure. Actions taken prevented failure from developing into full failure L RE R Y 25 ft 390.00 26.00 1925 MS00503 JOHNSON CREEK TRIB OF JONES CREEK 31.8667 -90.4033 MS Dept. of Environmental Quality
HIDDEN VALLEY LAKE DAM IN H Non-Failure 12/06/2011 Structural Stability Slope Stability IN00100-1210 slump on the downstream slope Yes 0 0 Additional slide on downstream slope noted on 2/13/12 - see attached memo. P RE R N 135 ft 7750.00 139.00 1973 IN00100 DOUBLELICK RUN 39.1547 -84.8364 IDNR Y
MADER DAM NO 1 NE L Failure 01/01/2012 Seepage/Internal Erosion Piping NE01099-2844 No 0 0 0 0 None Unknown Dam had an auxiliary spillway but no principal spillway. Breach was found during routine periodic inspection in October 2014. P RE I NR 25 ft 238.00 21.00 1947 NE01099 TR-INDIAN CREEK 42.987 -103.814 NE DNR No NE DNR
SPRING LAKE DAM MS L Failure 01/01/2012 Deterioration or Poor Condition Spillway Pipe Failure MS00128-1864 CONDUIT FAILED VERY SLOWLY OVER 2-5 YEARS. EMBANKMENT HAS SLOWLY COLLAPSED OVER CONDUIT. No 0 0 ROAD ACROSS TOP OF DAM WAS CLOSED. P RE R NR 26 ft 480.00 93.00 1971 MS00128 LITTLE MOUNGERS CREEK 30.5933 -88.6933 MS Dept. of Environmental Quality
DOW LAKE DAM OH H Non-Failure 01/13/2012 Structural Stability Slope Stability OH00086-1780 Shallow slide on downstream slope Yes 0 0 None none 0 emergency repairs made; dam now set for complete repairs
 S RE R Y 66 ft 7018.30 161.00 1959 OH00086 STROUDS RUN 39.33 -82.01 DEPARTMENT OF NATURAL RESOURCES 12:00 AM
CLEAR SPRING LAKE DAM TX H Non-Failure 01/15/2012 Hydrologic/Flooding Overtopping TX02715-2713 OVERTOPPING, DID NOT BREACH. CONSIDERABLE SPILLWAY DAMAGE P RE R N 19 ft 350.00 25.00 1950 TX02715 GREENS CREEK 30.1127 -97.4648 TCEQ TX DEQ
GEORGETOWN LOW HEAD DAM OH L Failure 01/18/2012 Deterioration or Poor Condition Other OH00000-1788 Collapse of large sections of dam No 0 0 None Former water supply intake. Incident Date from USGS video - https://www.usgs.gov/index.php/media/videos/white-oak-creek-after-low-head-dam-failure#:~:text=Detailed%20Description,%2D%20and%20high%2Dflow%20conditions. PG S 15 ft 0.00 1938 OH00000 WHITE OAK CREEK 0 0 ODNR
MAPLE VALLEY LAKE DAM OH S Non-Failure 01/27/2012 Deterioration or Poor Condition Spillway Pipe Failure OH02514-1787 Leak along spillway conduit at joint near outlet No 0 0 None NONE 0 P RE R N 27 ft 22.90 2.00 1970 OH02514 TRIBUTARY TO SOUTH FORK SUGAR CREEK 40.55 -81.63 DEPARTMENT OF NATURAL RESOURCES 12:00 AM
WEDDING LAKE DAM OH L Non-Failure 01/27/2012 Seepage/Internal Erosion Piping OH02535-1786 Piping along spillway conduit caused severe erosion through dam Yes 0 0 None none 0 Incident found during a routine periodic inspection RE R N 15 ft 119.00 0.00 1970 OH02535 TRIBUTARY TO BOKES CREEK 40 -83 DEPARTMENT OF NATURAL RESOURCES 12:00 AM
HENRY HUDSON DAM MS L Failure 02/22/2012 Seepage/Internal Erosion Spillway Pipe Failure MS03469-1440 DAM FAILED AT THE PRIMARY SPILLWAY CONDUIT. IT APPEARED FAILURE WAS THE RESULT OF SEEPAGE ALONG THE 24 INCH CONDUIT THRU THE DAM. No 0 0 None THE RISER WAS LOCATED DOWNSTREAM SO SEEPAGE COULD HAVE BEEN FROM THE CONDUIT INTO THE DAM ANYWHERE ALONG ITS LENGTH. OWNER INDICATED CONDUIT WOULD BE PRESSURE TESTED PRIOR TO BEING REINSTALLED. P RE R NR 17 ft 287.00 24.00 1999 MS03469 TR.-TICK CREEK 31.4153 -89.52 MS Dept. of Environmental Quality
MUSKINGUM RIVER LOCK AND DAM NO. 7 OH S Non-Failure 02/23/2012 Deterioration or Poor Condition Other OH00697-1782 Partial Failure of Sheet Piling Dam Yes 0 0 None none 0 S OTOT R Y 15 ft 2999.00 442.00 1841 OH00697 MUSKINGUM RIVER 39.64 -81.85 DEPARTMENT OF NATURAL RESOURCES 12:00 AM
NESBITT PA H Non-Failure 02/23/2012 Seepage/Internal Erosion Settlement PA00449-3189 A DEPRESSION, 10' ACROSS & 3' DEEP, FOUND ON UPSTREAM SLOPE DURING MAJOR REHAB PROJECT No 0 0 FURTHER DRAWDOWN WAS INITIATED, SITE WAS MONITORED, AND DEPRESSION INVESTIGATED BY EXCAVATION. LOCATION OF DEPRESSION WAS AT NORMAL POOL LEVEL BUT NOT WITHIN REHAB PROJECT AREA U MSREST HS Y 101 ft 5034.00 116.00 1903 PA00449 SPRING BROOK 41.3264 -75.6536 2012 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
LAKE MINNETOSKA DAM MD L Non-Failure 03/01/2012 Unknown Spillway Chute Failure MD00154-3091 Concrete chute spillway on earth embankment undermined and partially failed during rain event. No P RE R NR 10 ft 26.00 0.00 1924 MD00154 HERRINGTON RUN 39.4563 -79.4648 MD DAM SAFETY MDE Dam Safety Program
LAUREL LAKE DAM OH S Non-Failure 03/16/2012 Seepage/Internal Erosion Piping OH02153-1784 Piping through saddle dam Yes 0 0 None none 0 P RE R N 20 ft 88.80 8.00 1955 OH02153 TRIBUTARY TO SAMS CREEK 40.56 -82.77 DEPARTMENT OF NATURAL RESOURCES 12:00 AM
PINE ACRES LAKE DAM OH S Failure 03/19/2012 Seepage/Internal Erosion Piping OH00284-1783 Piping along spillway conduit caused breach of dam Yes 0 0 None 33 dam failed slowly. Owner only noticed failure in progress due to pending dam safety inspection by state P RE R N 22 ft 43.20 5.00 1965 OH00284 TRIBUTARY TO WOLF RUN 38.93 -82.27 DEPARTMENT OF NATURAL RESOURCES 12:00 AM
LAKE MCINTYRE TX L Non-Failure 03/23/2012 Structural Stability Slope Stability TX03844-1380 Slide 65 feet long from crest of dam to 14 feet down. Seepage in scarp No 0 0 Other 0 Water supply for subdivision located downstream. EAP not required of low hazard dam
Per recent legislation, this dam is exempt from state regualtion until 9/1/2015. Agency could only advise, could not require anything. 		P RE P NR 35 ft 355.00 25.00 1963 TX03844 TR-PALO PINTO CREEK 32.585 -98.3183 TCEQ
WALKER CREEK DAM #1 MI L Failure 04/13/2012 Malfunction of Equipment/Gate Gate/Valve Failure Sinkhole MI00411-1327 Stoplogs failed and drained the impoundment. Also, there was a sinkhole developing on the upstream slope in the vicinity of the CMP pipe riser. No 0 0 None none 280 RE R NR 17 ft 850.00 41.00 1965 MI00411 WALKER CREEK 43.7167 -84.9917 Michigan DEQ Y
MCMAHON CA S Non-Failure 04/17/2012 Manmade Action Spillway Pipe Failure CA00701-1900 Sudden closure d/s valve while u/s valve was open, the hydraulic pressure caused an 8-inch section of PVC pipe to rupture. No 0 0 None An 8-inch diameter TEE of of the main outlet pipe ruptures while attempting to close the d/s butterfly valve. Small uncontrolled release, no other significant damage P RE IS NR 52 ft 878.00 26.00 1957 CA00701 MAXWELL CREEK 37.6997 -120.201 Division of Safety of Dams
DRUID HILL LAKE MD H Non-Failure 04/17/2012 Unknown Under Investigation MD00109-1860 Unexplained settlement ds slope. Repair of pot holes in Interstate Highway constructed in 1950s on dam embankment, Highway Department not aware of dam under roadway. To date evidence suggests piping in dam. Yes 0 0 Roads, Water Supply Lane restriction for surface repairs. Interstate Highway, Public Water L RE S Y 118 ft 1880.00 48.00 1871 MD00109 OFFSTREAM-JONES FALLS 39.3186 -76.6315 1999 MD Dam Safety MD Dam Safety
THE MEADOWS DAM OH S Failure 05/10/2012 Seepage/Internal Erosion Piping OH00935-1785 Piping along spillway conduit caused breach of dam Yes 0 0 Water/sewer lines 30 RE C N 22 ft 68.00 0.00 1975 OH00935 TRIBUTARY TO MUD BROOK 41.17 -81.46 DEPARTMENT OF NATURAL RESOURCES 12:00 AM
BROOKSTONE LAKE DAM MS H Failure 06/10/2012 Seepage/Internal Erosion Piping Spillway Riser Failure MS03665-1441 PIPING THROUGH CONDUIT CLOSE TO RISER No 0 0 None 27 DAM APPEARS TO HAVE FAILED THROUGH AN OPEN JOINT IN CONDUIT NEAR TO THE RISER. EMBANKMENT MATERIAL PIPED THROUGH HOLE UNTIL A CLEAR PATHWAY TO LAKE WAS ESTABLISHED. LAKE DRAINED THROUGH HOLE. P RE R Y 18 ft 56.10 6.00 2007 MS03665 TRIBUTARY OF TRIBUTARY OF BEAR CREEK 32.4861 -90.1675 2013 MS Dept. of Environmental Quality
THOMSON DAM NO 5-1/2 MN H Failure 06/20/2012 Unknown Under Investigation MN00604-1861 The right embankment of the headrace canal (called Forbay Lake) leading to the hydro plant failed. Yes 160 Roads Hydropower plant no longer able to be fed water, MN Highway 210 failed X PG HR Y 23 ft 4352.00 375.00 1907 MN00604 ST LOUIS RIVER 46.665 -92.4067
CORUNNA DAM MI S Failure 06/26/2012 Deterioration or Poor Condition Other MI00379-1340 Deterioration of the concrete-capped timber-crib spillway has led to a partial breach in the dam. Yes 0 0 None None 35 Water is flowing through a sinkhole in sediment material upstream of dam through a hole in downstream face of the dam likely carrying foundation materials and sediment with it. Partial breach continues to develop during periods of low flows. Has lowered the impoundment approximately 2 vertical feet. Impoundment continues to be drawn down through the breach as headcut through sediment develops and foundation materials are eroded. No full release of impoundment waters and sediments has occured to date. L TC R Y 15 ft 80.00 17.00 1843 MI00379 SHIAWASSEE RIVER 42.9857 -84.1179 Michigan DEQ 12:00 AM Y
FOSTORIA UPGROUND RESERVOIR NO. 5 OH H Non-Failure 06/26/2012 Structural Stability Slope Stability OH00788-1781 Shallow slide on downstream slope Yes 0 0 None none 0 L RE S Y 36 ft 2900.00 129.00 1958 OH00788 EAST BRANCH PORTAGE RIVER - OFFSTREAM 41.11 -83.44 DEPARTMENT OF NATURAL RESOURCES 12:00 AM
MOUNT LAUREL (MUD RUN) PA H Non-Failure 07/11/2012 Structural Stability Cracking PA00690-3198 DURING REHAB, A 100' CRACK DEVELOPED ON THE CREST EXTENDING FROM SPILLWAY TO CENTER OF DAM. Yes 0 0 CONTRACTOR COMPLETED INSTALLING SHEET PILING TO ISOLATE CRACK. PLAN TO MONITOR BY CONSULTANT. 0 CONTRACTOR WAS WORKING IN THIS AREA INSTALLING SHEET PILING. EAP EARLY WARNING L MSRE S Y 39 ft 852.00 48.00 1879 PA00690 MUD RUN 40.7703 -76.2311 2013 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 5:00:00 PM PA Dam Safety
BROOKVILLE WATERWORKS PA S Failure 07/17/2012 Hydrologic/Flooding Overtopping PA00422-3188 HEAVY RAINS RESULTED IN 18" OVERTOPPING, WASHED AWAY EARTH DAM D/S OF CONCRETE CORE. No 0 0 0 0 PA DEPT OF HEALTH WARNED D/S HOMES (BORO REFUSED). LATER DAM RAISED W/ WIDER SPILLWAY L RE S Y 24 ft 505.00 18.00 1912 PA00422 NORTH FORK CREEK 41.17 -79.0731 2000 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 12:00:00 AM 1 DAY Yes PA Dam Safety
BRAINARD LAKE DAM NJ S Non-Failure 08/22/2012 Seepage/Internal Erosion Piping NJ00152-1400 The seepage was observed on the downstream side of the dam, adjacent to the culvert, flowing not through the culvert but under and through the downstream masonry wall.  The lake level had dropped one foot. Yes 0 0 L PGRE R Y 13 ft 152.00 22.00 1840 NJ00152 CRANBURY BROOK 40.3098 -74.5166 NJDEP
MIKE WILLIAMS DAM MS S Failure 08/29/2012 Hydrologic/Flooding Overtopping MS00000-1444 OVERTOPPING-AS REPORTED BY OWNER WHO WAS ONSITE AT THE TIME OF FAILURE. 0 0 Roads 135 TWO PAVED ROADS WASHED OUT RE R 18 ft 0.00 2005 MS00000 UNNAMED TRIBUTARY 0 0 MS DEQ
LAKE SERENE SOUTHEAST DAM MS H Non-Failure 08/29/2012 Deterioration or Poor Condition Spillway Pipe Failure MS00704-1442 CONDUIT FAILED VERY SLOWLY OVER 2-5 YEARS. EMBANKMENT HAS SLOWLY COLLAPSED OVER CONDUIT. Yes 0 0 P RE R Y 24 ft 1037.00 68.00 1969 MS00704 PERKINS CREEK 31.2931 -89.4333 MS Dept. of Environmental Quality
UNKNOWN MS L Failure 08/30/2012 Unknown Unknown MS00000-1862 FAILURE AROUND CONDUIT. EXACT CAUSE UNKNOWN TRASH DEPOSITED DOWNSTREAM. APPEARS DAM OWNER BUILT DAM TO COVER UP UNAUTHORIZED DUMPING RE 15 ft 0.00 MS00000 0 0 MDEQ
PERCY QUINN STATE PARK DAM MS H Non-Failure 08/30/2012 Structural Stability Slope Stability MS00579-1443 LARGE SLIDES DEVELOPED WITH SEEPAGE. DID NOT LEAD TO UNCONTROLLED RELEASE OF POOL. Yes 0 0 None POOL WAS PUMPED DOWN TO SAFE LEVEL WHILE A BREACH CUT WAS CUT INTO NATURAL GROUND. BREACH CUT WILL KEEP POOL DRAINED WHILE REPAIRS ARE MADE. S RE R Y 34 ft 8112.00 700.00 1940 MS00579 TANGIPAHOA RIVER 31.175 -90.5286 1990 MS Dept. of Environmental Quality
SANTA CLARA UT H Failure 09/11/2012 Deterioration or Poor Condition Animal Activity UT00443-1865 Internal erosion likely initiated through animal burrows during a heavy precipitation event. Yes 66 $5 million to $10 million 78 66 homes, 18 businesses flooded. EAP initiated, no one hurt, no fatalities. L RE C Y 40 ft 70.00 0.00 1919 UT00443 UNNAMED TRIB. TO SANTA CLARA 37.1292 -113.637
BROWN BRIDGE DAM MI H Failure 10/08/2012 Seepage/Internal Erosion Foundation Deficiency MI00544-1460 Investigation determined water pressure destabilized subsurface soils and led to erosion of foundation soils, release of water beneath the control structure and collapse of an earthen embankment beside part of the drawdown structure. Failure of a temporary dam put in place to gradually release water from Brown Bridge pond. Report of 66 properties damaged.
Property-damage lawsuits pending. 		PGRE Y 46 ft 2800.00 191.00 1921 MI00544 BOARDMAN RIVER 44.6434 -85.5095 Michigan DEQ Y
LOWER KLONDIKE PA H Non-Failure 10/22/2012 Seepage/Internal Erosion Excessive/Increased Seepage PA00751-3210 DURING INSPECTION, ENGINEER OBSERVED WATER FLOWING INTO VOID ON UPSTREAM FACE OF EMBANKMENT. No 0 0 OWNER ADVISED TO INITIATE DRAWDOWN. PROPOSED GROUT REPAIR PLAN DENIED. DAM REMAINS DRAINED. FLOW THROUGH DAM IN EXCESS OF 15 GPM. DOWNSTREAM TOE WAS SATURATED. P RE R Y 19 ft 254.00 22.00 1960 PA00751 LEHIGH RIVER 41.2533 -75.4508 2007 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
SPEEDWELL FORGE PA H Non-Failure 10/29/2012 Hydrologic/Flooding Overtopping PA00345-1920 Rising pool threatened to overtop partially breached embankment. At 23:00 hours the lowered embankment was overtopped but the embankment did not fail. Yes 200 0 None none 0 Emergency Action Plan was up-to-date and Evacuation was smooth with no injuries. S RE R Y 35 ft 2372.00 106.00 1966 PA00345 HAMMER CREEK 40.2039 -76.3075 PADEP
UTE CREEK CO L Non-Failure 11/01/2012 Seepage/Internal Erosion Excessive/Increased Seepage CO01366-2096 Unexpected seepage from dam. Advised owner on surveillance and monitoring and to lower reservoir if conditions worsen. P RE S NR 119 ft 429.00 12.00 1976 CO01366 UTE CREEK 39.8394 -106.094 1997 DWR
ELKHORN LAKE DAM KY H Non-Failure 11/10/2012 Seismic Cracking KY00113-1480 Magnitude 4.3 earthquake resulted in potential new cracks on the structure and increased seepage at the toe, right side. No 0 0 None none 0 The owner will be monitoring these changes and KY dam safety recommend that they hire a geotech to investigate further. L PG S NR 40 ft 16.00 1930 KY00113 ELKHORN CREEK 37.1683 -82.635 DOW Y
NORTHGLENN TERMINAL CO S Non-Failure 11/11/2012 Deterioration or Poor Condition Spillway Pipe Failure CO02247-2093 Uncontrolled leakage from deteriorated outlet conduit. Sealed with an inflatable bulkhead. Planned for full replacement L RE S Y 35 ft 147.00 9.00 1981 CO02247 BIG DRY CREEK-OS 39.8979 -105.013 DWR
GAYNOR CO S Non-Failure 11/28/2012 Seepage/Internal Erosion Excessive/Increased Seepage CO00284-2089 Previously unobserved seepage form beneath outlet structure. Sealed temporrily and heightened survelience until repairs are made. L RE IR Y 10 ft 840.00 70.00 CO00284 BOULDER CREEK-OS 40.1225 -105.11 1960 DWR
MADISON BAPTIST FELLOWSHIP DAM MS L Non-Failure 12/27/2012 Deterioration or Poor Condition Animal Activity MS00000-1863 SEEPAGE DUE TO ANIMAL BURROWS. No 0 0 None SEEP WAS REPORTED TO THE COUNTY EMERGENCY MANAGER WHO CONTACTED MDEQ. IT WAS DETERMINED THAT THE DAM WAS TOO SMALL TO BE A THREAT. THE COUNTY EMERGENCY MANAGER PUMPED THE LAKE DOWN THE FOLLOWING DAY AS A PRECAUTIONARY MEASURE. RE R 8 ft 0.00 MS00000 33 -90 MDEQ
BYLLESBY VA H Non-Failure 01/31/2013 Hydrologic/Flooding Overtopping VA03501-1540 Severe storms caused water to flow over the dam and flashboards, causing the water pressure to build up to potentially unsafe levels behind the dams. The flashboards are designed to give way but in this case, they needed to be removed by hand. Yes Pulaski County declared a state of emergency and issued mandatory evacuations in the Parrott, Belspring, Hiwassee, Delton, and Allisonia communities. About 80 homes were contacted for evacuation. U PGCN HR Y 63 ft 2034.00 242.00 1912 VA03501 NEW RIVER 36.7858 -80.9336 1993 DCR Y
BUCK VA H Non-Failure 01/31/2013 Hydrologic/Flooding Overtopping VA03502-1542 Severe storms caused water to flow over the dam and flashboards, causing the water pressure to build up to potentially unsafe levels behind the dams. The flashboards are designed to give way but in this case, they needed to be removed by hand. Yes Pulaski County declared a state of emergency and issuedmandatory evacuations in the Parrott, Belspring, Hiwassee, Delton, and Allisonia communities. About 80 homes were contacted for evacuation. U PGCN HR Y 45 ft 708.00 68.00 1912 VA03502 NEW RIVER 36.8078 -80.9386 1993 DCR Y
RINGTOWN NO 5 PA H Non-Failure 03/28/2013 Seepage/Internal Erosion Excessive/Increased Seepage Erosion PA00659-3197 UNCONTROLLED SEEPAGE & EROSION OBSERVED AT TOE OF DAM. No 0 0 OWNER DIRECTED TO BEGIN DRAWDOWN, STOCKPILE SAND & STONE DRAIN MATERIAL, & PROVIDE 24-HR SURVEILLANCE. DYE STUDY VERIFIED 15-FT DRAWDOWN NEEDED UNTIL REPAIRED. REPAIR SCHEDULE NOT YET PROVIDED. L RE S Y 62 ft 1200.00 38.00 1914 PA00659 DRESHER RUN 40.8428 -76.2475 2011 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
LAKE JOHN CO S Non-Failure 04/01/2013 Other Other CO00993-2088 Caretaker noticed a hole in the ice on the reservoir near the dam. Potential issue with seepage and piping resulting in the flow of water near this location. Performed field work and determined it did not appear to be a seepage related issue. Educated caretaker for increased surveillance. S RE RF Y 27 ft 16128.00 612.00 1957 CO00993 N FK NORTH PLATTE-TR 40.7672 -106.462 DWR
MINSI LAKE PA H Non-Failure 04/01/2013 Deterioration or Poor Condition Spillway Chute Failure PA00788-3193 A LARGE SPALL CAME OFF THE SPILLWAY FLOOR SLAB. No 0 0 LAKE DRAWN DOWN BY 2.5 FT & IN AUGUST CONCRETE REPLACED IN SPALLS. TOTAL REHAB. IS PLANNED. PERMIT FOR SPILLWAY REPLACEMENT & DAM REPAIRS ISSUED IN OCT. 2017. CONSTRUCTION PENDING IN 2018. S RE R Y 27 ft 1793.00 117.00 1970 PA00788 EAST BRANCH MARTINS CREEK 40.9117 -75.1697 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety
WHITE TAIL LAKE DAM IN S Non-Failure 04/03/2013 Deterioration or Poor Condition Spillway Pipe Failure IN03497-1560 progressive failure of its principal spillway pipe
CMP deteriorated creating sinkhole on d/s slope 		No 0 0 None As of incident date, IN DNR attempting to contact the dam owner to rectify the situation. P RE R N 27 ft 509.00 32.00 1964 IN03497 STONE COE CREEK 38.4172 -87.225 IDNR
BONG RECREATION AREA 8 WI L Non-Failure 04/12/2013 Hydrologic/Flooding Spillway Pipe Failure WI01149-1580 Water breached the dam's overflow pipe. High water has also washed away the soil surrounding the pipe. Yes 0 0 Roads 0 State highway closed S RE R N 10 ft 900.00 158.00 1972 WI01149 TR. BRIGHTON CREEK 42.625 -88.1139 2015 WIDNR
OXFORD NC H Non-Failure 05/05/2013 Malfunction of Equipment/Gate Gate/Valve Failure NC00329-1601 Heavy rainfall resulted in opening of gates and one of the gates would not fully open. Remote control system malfunction, origin not yet determined or reported No 0 P PGCNRE H Y 122 ft 127500.00 4110.00 1928 NC00329 CATAWBA RIVER 35.8214 -81.1922 Y
ALLENDALE LAKE DAM IN L Non-Failure 05/08/2013 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole IN03121-1602 A sinkhole in the embankment developed over the principal spillway pipe. After the pipe was camera inspected, the engineer determined that the metal pipe needed to be replaced immediately No 0 The owner has been keeping the lake level below the pipe inlet. P RE R N 32 ft 135.00 8.00 1981 IN03121 UNNAMED TRIBUTARY BUCKHART CREEK 39.4039 -86.1231 IDNR
MASHBURN MILLPOND DAM (LAKE ALICE) GA L Failure 05/19/2013 Hydrologic/Flooding Overtopping GA02000-1620 Heavy rainfall with report of up to 7 inches. The breach occurred in the center of the dam and included the principal spillway pipe. No Roads Damage to a downstream road & sediment released into Lake Lanier P RE R NR 25 ft 108.00 0.00 1930 GA02000 LITTLE RIDGE CREEK 34.1933 -84.1244 GA-SAFE DAMS PROGRAM 12:00 AM Y
RENWICK DAM ND H Non-Failure 05/21/2013 Hydrologic/Flooding High Reservoir Level ND00054-1940 Watershed received widespread 4-6 inches of rain on May 20, 2013. (See attached for additional description.) Yes 1300 0 City officials in Cavalier, ND lifted the evacuation order on May 24, 2013. The dam is located in Icelandic State Park. (see attached for additional information) L RE CR Y 49 ft 11658.00 223.00 1962 ND00054 TONGUE RIVER 48.7779 -97.7494 NDSWC Y
OLSON DAM ND H Non-Failure 05/21/2013 Hydrologic/Flooding High Reservoir Level ND00056-1941 Watershed received 4-6 inches of rain on May 20, 2013. The reservoir was already full from heavy late season snow and late season snowmelt runoff. Water flowed through both of the dam's earthen auxiliary spillways. See additional remarks below. Yes 0 0 None The dam was damaged as a result of the flow through the auxiliary spillways. A major slide occurred on the left spillway dike of the south auxiliary spillway, taking out a section of the dike. Some headcutting occurred in the north auxiliary spillway. L RE C Y 74 ft 1077.00 7.00 1957 ND00056 TONGUE RIVER-TR 48.7304 -97.9466 1985 NDSWC
BOURBANIS DAM ND S Non-Failure 05/21/2013 Hydrologic/Flooding High Reservoir Level ND00083-1942 Watershed received 4-6 inches of rain on May 20, 2013. The reservoir was already full from heavy late season snow and late season snowmelt runoff. Water flowed through the dam's earthen auxiliary spillway on May 21-22, 2013 and again on May 31, 2013. Yes 0 0 None The dam's auxiliary spillway was damaged. Flow through the spillway resulted in a major headcut at the downstream end of the auxiliary spillway, and a signifcant erosion channel at the entrance to the auxiliary spillway. L RE CF N 76 ft 1502.10 9.00 1957 ND00083 TONGUE RIVER-TR 48.7844 -97.9801 1984 NDSWC
LAKE FERRELL DAM MO Non-Failure 05/31/2013 Hydrologic/Flooding Overtopping MO00000-1640 approximately a 20 to 30 foot long section of the dam overtopped. Damage was minimal. Cooper County EMA Director indicated there may be a threat to one home.
Height is estimated. 		RE 30 ft 0.00 MO00000 39 93
LITTLE KING RANCH CO S Non-Failure 06/01/2013 Seepage/Internal Erosion High Reservoir Level CO00712-2090 Dam with absentee owner. Water level rose well above restricted level during spring runoff, resulting in heavy seepage from foundation and abutments. Water commissioner directed to control water level as possible. Finally able to track down owner and get their attention. Outlet required to be fully open until plans for seepage control repairs can be made. P RE R Y 65 ft 1570.00 52.00 1968 CO00712 BUFFALO CREEK 40.2617 -106.113 DWR
MILLSTONE PA L Non-Failure 06/01/2013 Unknown Overtopping PA00000-3228 CONCRETE SLAB AT THE BASE OF DAM HAS MOVED 1 TO 2 FT, COMPROMISING THE DAMS STABILITY 0 0 FEDERAL DAM WITH NO STATE JURISDICTION. OWNER NOTIFIED CAMPGROUND DOWNSTREAM. NO PA DAM SAFETY INSPECTIONS SINCE 1993. UNKNOWN IF REPAIRS WERE MADE. F RECN F 5 ft 0.00 PA00000 EAST BRANCH MILLSTONE CREEK 41.2406 -79.0454 PADEP PA Dam Safety
MONTGOMERY CO H Non-Failure 06/05/2013 Seepage/Internal Erosion Excessive/Increased Seepage CO00372-2092 New seepage (near 1 cfs) at toe of rockfill dam. Increased monitoring, performed failure modes analysis. It was hypothesized that it was melting ice from within the rockfill of this high altitude dam after an abnormally wet and cold spring. L ER S Y 112 ft 6100.00 95.00 1956 CO00372 MIDDLE FORK S. PLATTE 39.3533 -106.074 DWR
MISSION - SANDY SPRINGS LAKE DAM GA Non-Failure 06/05/2013 Hydrologic/Flooding Spillway Pipe Failure Slope Stability GA00000-1660 Occurred during a heavy rainfall event but included pipe failure and slope instability - see the attached report for more detail. No 100 0 Roads 13 The dam is exempt from GA Safety Dams regulation. It is located in Fulton Co. but otherwise minimal information on the dam. 0.00 GA00000 0 0 Y
MORRIS DAM NC S Non-Failure 06/07/2013 Hydrologic/Flooding Overtopping NC00021-1683 Dam overtopped during passage of TD Andrea No 0 0 None 0 An auxilary relief channel had to be excavated through an abutment. Threatened Swanns Station Road downstream from Dam P RE P N 12 ft 153.00 0.00 NC00021 JUNIPER CREEK 35.379 -79.132
WHISPERING WOODS GOLF COURSE DAM NC H Non-Failure 06/07/2013 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole NC05358-1682 Sink hole developed over a low level abandoned CMP through the dam. Occurred during heavy rain from TS Andrea. No 0 0 None None 0 Sinhole evidently developed through corroded section(s) of CMP or bad joint. Incident occurred during passage of TD Andrea. Failuire did not occur and reservoir was not released. P RE RI N 13 ft 17.00 0.00 NC05358 TRIB-MILL CREEK 35.2351 -79.3668 NCDENR
RHODES LAKE DAM NC S Non-Failure 06/08/2013 Hydrologic/Flooding Overtopping NC01145-1684 Earthen section of dam overtopped adjacent to concrete spillway wall. Sand bags where installed to prevent overtopping. No 0 1 None None 0 Sand bags where installed to prevent overtopping. One home flooded on upstream face of dam. Threatened NC Hwy 301 and I-95 downstream from dam. Dam overtopped during passage of TD Andrea.
 S RE R Y 15 ft 2304.00 0.00 NC01145 BLACK RIVER 35.2258 -78.6528 2011
DELTA CONTROL CO L Non-Failure 07/01/2013 Seepage/Internal Erosion Piping CO00565-2087 Non-juridictional, Erosion around outlet gate and piping along outlet conduit L RE S NR 32 ft 54.00 4.00 1961 CO00565 GUNNISON RIVER-TR 38.81 -108.071 DWR
SPRING RUN PA L Non-Failure 07/01/2013 Hydrologic/Flooding Overtopping PA00000-3240 COUNTY REPORTED REPEATED OVERTOPPING OF DAM & EROSION DURING RECENT WEATHER EVENT. 0 0 DEP STAFF INSPECTED SITE. NO SIGNIFICANT DETERIORATION COMPARED TO PRIOR INSPECTIONS, 0 THERE WAS SOIL EROSION ON WINGWALLS AND 1.5 INCH OVERTOPPING DEPTH. P RE R 6 ft 0.00 PA00000 SCRUBGRASS CREEK 41.1154 -79.5148 PADEP 2:00:00 PM PA Dam Safety
WRIGHT S DAM FL S Failure 07/05/2013 Hydrologic/Flooding Unknown FL00154-1681 Media reports indicate the dam collapsed from excessive rainfall 0 0 None The local media report indicated a 50-foot gap in the dam's headwall P RE OP N 25 ft 874.00 0.00 1973 FL00154 PETERS CREEK 30.02 -81.75 Y
JACOBS IRRIGATION POND DAM GA L Failure 07/13/2013 Deterioration or Poor Condition Spillway Pipe Failure GA04740-1700 Spillway pipe failure during a heavy rainfall event. No 0 0 Roads, Railroads Based on news reports, the owner stated that during a flooding event, there was a vortex in the lake and water was discharging through the dam. It appeared to be a spillway pipe failure. P RE I NR 31 ft 1390.00 65.00 1977 GA04740 MILL BRANCH 32.6317 -81.7694 GA-SAFE DAMS PROGRAM Y
FOWLER PARK LAKE DAM IN L Non-Failure 07/17/2013 Deterioration or Poor Condition Spillway Pipe Failure IN00462-1720 Corrugated metal pipe may have deteriorated to the point where soil is entering the pipe and/or the inlet box connection to the pipe has leaked allowing water to travel along the outside of the conduit removing embankment material No 0 0 None L RE R N 22 ft 253.00 22.00 1958 IN00462 UNNAMED TRIBUTARY HONEY CREEK 39.3386 -87.3739 IDNR
DERRY RUN BASIN C PA L Failure 07/22/2013 Hydrologic/Flooding Spillway Pipe Failure PA00000-3242 OUTLET WORKS INCLUDING 4' DIAMETER CMP WERE UNDERMINED AND FAILED 0 0 0 0 BREACHING OF THE DAM WAS COMPLETED ON SEPT 17, 2014 PA DEP APPROVED BREACH/REMOVAL PLAN FOLLOWING THE FAILURE. L RECN C 0.00 PA00000 TR LITTLE CONEWAGO CREEK 39.5802 -76.4822 PADEP 1 DAY PA Dam Safety
MODEL CO L Failure 08/08/2013 Seepage/Internal Erosion Piping CO00542-2091 Embankment failure due to erosion piping. An 8-ft-square erosion pipe formed in the embankment, draining the reservoir but not fully breaching the dam. The failure went unnoticed due to it's remote location and other incidents happening at about the same time. The date of the actual failure is estimated. RE IP NR 39 ft 29943.00 420.00 1921 CO00542 BLACK HILLS ARROYO-TR 37.3283 -104.389 DWR
TWO BUTTES CO H Non-Failure 08/08/2013 Hydrologic/Flooding Insufficient Spillway Capacity CO00759-2094 Due to heavy rainfall reservoir went from dry 55 feet above the outlet between 8-1 & 8-8. There was concern that the spillway could flow and potentially the dam could overtop due to a spillway not meeting the Rules. Yes Since the design event has a low probability of occurrence, allowances were made to the owner to temporarily store over the restricted storage level. Activated EAP at a Level 1, unusual condition level; Communication with Emergency Managers, and increased surveillance of the dam on a daily basis is required and being performed by the owner's staff. S RE RF Y 106 ft 40654.00 1182.00 1908 CO00759 TWO BUTTE CREEK 37.6359 -102.538 DWR
UPPER HIGHLINE CO H Non-Failure 08/27/2013 Malfunction of Equipment/Gate Gate/Valve Failure CO00831-2095 Hydraulically operated valve became bound and could not be closed. An uncontrolled release of about 200 cfs occurred continuously until some emergency actions were initiated to slow the release. Divers accessed the valve and made necessary adjustments to close it. S RE R Y 98 ft 7125.00 155.00 1967 CO00831 MACK WASH-TR 39.27 -108.846 1969 DWR
RACKY MOUNTAIN ARSONAL DAMS CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO00000-2120 Colorado Floods 0.00 CO00000 0 0
SUNSET DAM CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO00000-2121 Colorado Flooding 0.00 CO00000 0 0 12:00 AM
GREAT WESTERN CO H Non-Failure 09/12/2013 Hydrologic/Flooding High Reservoir Level CO00000-2125 spillway flows - Colorado Flooding of 9-13 0.00 CO00000 0 0
RAINBOW DAM CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO00000-2132 Colorado Flooding of 9-13 0.00 CO00000 0 0
WILLOW DAM CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO00000-2134 Colorado Flooding of 9-13 0.00 CO00000 0 0
BASELINE - EAST CO H Non-Failure 09/12/2013 Hydrologic/Flooding Unknown CO00214-2062 Unprecedented, uncontrolled inflows
Colorado Flooding of 9-13 		P RE IS Y 44 ft 6592.00 270.00 1905 CO00214 DRY CREEK 39.9986 -105.198 DWR
LEYDEN CO H Non-Failure 09/12/2013 Hydrologic/Flooding Other CO01216-2075 reports of dam failing; spillway flows - Colorado Flooding of 9-13 L RE CR Y 46 ft 1300.00 19.00 1902 CO01216 LEYDEN CREEK 39.8383 -105.171 2001 DWR
MEADOW LAKE CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO02717-2086 failed 1:40 pm 9/12 - Colorado Flooding of 9-13 RE R NR 30 ft 92.00 6.00 1957 CO02717 W FORK LITTLE THOMPSON 40.2621 -105.419 DWR
CHASE GULCH CO H Non-Failure 09/12/2013 Seepage/Internal Erosion Excessive/Increased Seepage CO02786-2072 new seepage reported; Colorado Flooding of 9-13 L ER S Y 100 ft 1250.00 25.00 1996 CO02786 CHASE GULCH 39.8165 -105.53 DWR
BASELINE - NORTHWEST CO H Non-Failure 09/12/2013 Structural Stability Slope Stability CO02820-2063 slope instability with uncontrolled inflow and continuing rain. Colorado Flooding of 9-13 P RE IS Y 20 ft 6592.00 270.00 1905 CO02820 SOUTH BOULDER CREEK-OS 40.0028 -105.206 DWR
PINE BROOK CO H Non-Failure 09/12/2013 Hydrologic/Flooding Other CO02896-2067 first time spillway flows - Colorado Flooding of 9-13 P RC S Y 84 ft 140.00 4.00 2006 CO02896 TWO MILE CREEK 40.0491 -105.312 DWR
CARRIAGE HILLS #1/UPPER CO L Non-Failure 09/13/2013 Hydrologic/Flooding Overtopping CO00000-2127 overtopped, erosion damage but not failure - Colorado Flooding of 9-13 0.00 CO00000 0 0
MIRROR DAM CO L Failure 09/13/2013 Hydrologic/Flooding Unknown CO00000-2131 Colorado Flooding of 9-13 0.00 CO00000 0 0
LATHAM RESERVOIR CO Failure 09/13/2013 Hydrologic/Flooding High Reservoir Level CO00000-2135 Reported in Denver Post as failing - Colorado Flooding of 9-13 0.00 CO00000 0 0
BARNES MEADOW CO H Non-Failure 09/13/2013 Hydrologic/Flooding High Reservoir Level CO00123-2083 Report of failing, only spillway flows - Colorado Flooding of 9-13 L RE IS Y 50 ft 3005.00 108.00 1923 CO00123 JOE WRIGHT CREEK-TR 40.6 -105.836 DWR
TUCKER LAKE - SOUTH DAM CO H Non-Failure 09/13/2013 Hydrologic/Flooding High Reservoir Level CO01181-2082 Arvada Police report of reservoir approaching capacity - Colorado Flooding of 9-13 P RE I Y 29 ft 882.00 56.00 1899 CO01181 RALSTON CREEK-OS 39.8254 -105.197 DWR
ARAPAHOE LAKE CO S Non-Failure 09/13/2013 Hydrologic/Flooding Overtopping CO02089-2061 reported overtopping; Colorado Flooding of 9-13 P RE R Y 23 ft 45.00 4.00 1974 CO02089 GOLDSMITH GULCH 39.6057 -104.874 DWR
SIX MILE - MAIN CO H Non-Failure 09/14/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00250-2068 uncontrolled inflows, spillway erosion - Colorado Flooding of 9-13 P RE IR Y 52 ft 2186.00 124.00 1892 CO00250 LITTLE DRY CREEK-TR 40.0675 -105.218 DWR
VIELE LAKE CO L Non-Failure 09/14/2013 Hydrologic/Flooding High Reservoir Level CO00257-2069 spillway flows (report of dam failing) - Colorado Flooding of 9-13 L RE RFC NR 24 ft 240.00 20.00 1967 CO00257 SOUTH BOULDER CREEK-TR 39.9733 -105.249 DWR
CURRIE LAKE DAM CO L Non-Failure 09/14/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00000-2129 headcutting in Spillway - Colorado Flooding of 9-13 0.00 CO00000 0 0
BUTTON ROCK CO H Non-Failure 09/14/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00171-2064 Spillway flowing causing damage, report of dam in trouble,failing. Colorado Flooding of 9-13 L RE S Y 214 ft 20400.00 222.00 1969 CO00171 NORTH ST. VRAIN CREEK 40.2171 -105.367 1990 DWR
LEFT HAND VALLEY CO H Non-Failure 09/15/2013 Hydrologic/Flooding High Reservoir Level CO00177-2066 Reported as being in trouble; John B reported spillways flows only. Colorado Flooding of 9-13 P RE I Y 68 ft 2814.00 113.00 1952 CO00177 DRY CREEK 40.0997 -105.261 2002 DWR
EMERALD VALLEY LOWER CO L Failure 09/16/2013 Hydrologic/Flooding Unknown CO00000-2123 dam reported to have failed on 9/12-9/13 - Colorado Flooding of 9-13 0.00 CO00000 0 0 Y
EMERALD VALLEY UPPER CO L Failure 09/16/2013 Hydrologic/Flooding Unknown CO00000-2124 dam reported to have failed on 9/12-9/13 - Colorado Flooding of 9-13 0.00 CO00000 0 0 Y
GAYNOR CO S Non-Failure 09/18/2013 Seepage/Internal Erosion Piping CO00284-2065 Reported by owner, piping around outlet works. Colorado Flooding of 9-13 L RE IR Y 10 ft 840.00 70.00 CO00284 BOULDER CREEK-OS 40.1225 -105.11 1960 DWR
MANITOU CO H Non-Failure 09/18/2013 Seepage/Internal Erosion Excessive/Increased Seepage CO00426-2071 new seepage reported - Colorado Flooding of 9-13 L RE S Y 124 ft 1100.00 27.00 1971 CO00426 NORTH FORK FRENCH CREEK 38.8767 -104.994 1998 DWR
FLATIRONS VISTA CO S Non-Failure 09/19/2013 Hydrologic/Flooding Overtopping Slope Stability Sinkhole CO00000-2081 overtopped, DS slide, sinkhole, partial breach. Colorado Flooding of 9-13 0.00 CO00000 0 0
CARRIAGE HILLS #2/LOWER CO L Failure 09/19/2013 Hydrologic/Flooding Overtopping CO00000-2128 Colorado Flooding of 9-13 0.00 CO00000 0 0 Yes Y
FISH HATCHERY DAM CO L Non-Failure 09/19/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00000-2130 severe erosion of spillway, reported by owner - Colorado Flooding of 9-13 0.00 CO00000 0 0
CEDAR SPRINGS CO L Non-Failure 09/19/2013 Hydrologic/Flooding Overtopping CO01767-2084 overtopped, spillway and DS slope damage, Owner reported - Colorado Flooding of 9-13 P RE FRP NR 37 ft 50.00 3.00 1969 CO01767 CEDAR CREEK 40.4614 -105.32 DWR
CROW LANE NO. 1 CO H Non-Failure 09/19/2013 Hydrologic/Flooding Other CO02932-2085 Owner reported - heavy spillway flows - Colorado Flooding of 9-13 U RE S Y 74 ft 52.00 4.00 2008 CO02932 UNAMED TRIB LT THOMPSON 40.2767 -105.358 DWR
ASPEN LODGE RESORT AND SPA CO S Non-Failure 09/20/2013 Hydrologic/Flooding Overtopping CO00000-2126 overtopped, debris flow plugged spillway, outlet inoperable, emergency breach - Colorado Flooding of 9-13 0.00 CO00000 0 0
IDAHO SPRINGS STORAGE CO L Non-Failure 09/22/2013 Hydrologic/Flooding Erosion CO00000-2122 erosion at toe - Colorado Flooding of 9-13 0.00 CO00000 0 0
UPPER GATES RESERVOIR DAM CO L Non-Failure 09/23/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00000-2133 reported by owner, severe headcutting in spillway - Colorado Flooding of 9-13 0.00 CO00000 0 0
BLANCHARD POND DAM MI L Non-Failure 10/07/2013 Deterioration or Poor Condition Gate/Valve Failure MI00118-1760 Broken board on the outlet structure and impoundment drawn down. No 0 0 None P RE R NR 12 ft 300.00 13.00 1978 MI00118 NORTH BRANCH PINE RIVER 43.525 -85.075 Michigan DEQ
LAKE SERENE NORTH DAM MS H Non-Failure 10/16/2013 Deterioration or Poor Condition Spillway Chute Failure MS00698-1880 PIPING UNDER THE SPILLLWAY SLAB. FURTHER INVESTIGATION IS TAKING PLACE. No 0 0 None none P RE R Y 28 ft 1803.00 135.00 1968 MS00698 PERKINS CREEK 31.3167 -89.4322 1992 MS Dept. of Environmental Quality Y
GORHAM NH L Non-Failure 10/17/2013 Deterioration or Poor Condition Spillway Chute Failure NH00191-1820 Appears structural members supporting upstream facing (timber crib design) in lower left section of spillway had given way resulting in a "V" shaped depression/void in the timber facing. Flow from this void exited through the downstream apron drains. 0 0 None NONE Structural concerns found on upstream face of timber crib dam during dive inspection. P TCERRE H NR 24 ft 370.00 45.00 1904 NH00191 ANDROSCOGGIN RIVER 44.4082 -71.1952 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y
SGL #69 DAM 13 PA L Non-Failure 01/01/2014 Other Animal Activity Debris Clogging PA00000-3226 DAMS BUILT FOR WATERFOWL DAMAGED BY BEAVERS BLOCKING SPILLWAYS & ASSOCIATED HIGH WATER. 0 0 0 0 Dams Downstream DAMS REMOVED AND NATURAL WATERWAYS RESTORED. THESE DAMS WERE INEFFECTIVE IN ATTRACTING WATER FOWL. S RE F 0.00 PA00000 WEST BRANCH SUGAR CREEK 41.3808 -79.5348 PADEP PA Dam Safety
LAKE HAVEN DAM OH L Non-Failure 02/01/2014 Deterioration or Poor Condition Spillway Riser Failure OH00115-2656 Principal spillway riser failed. Currently at lowered pool. No 0 0 0 0 P RE R N 22 ft 113.00 13.00 1960 OH00115 TRIBUTARY TO LAKE ERIE 41.42 -82.29 DEPARTMENT OF NATURAL RESOURCES OH DNR
DAN RIVER ACTIVE PRIMARY ASH BASIN NC H Failure 02/02/2014 Deterioration or Poor Condition Spillway Pipe Failure NC05945-1980 Failure of a 48-inch corrugated metal storm-water pipe that ran beneath the ash basin released ash slurry into the adjacent river. 83 An estimated 82,000 tons of ash were released into the river. The pipe was thought to be reinforced concrete but it was actually CMP and only RCP at the outlet. Estimated 27 M gallons of basin water released. U RE O Y 40 ft 0.00 NC05945 DAN RIVER 36.4883 -79.7148 NCDENR Y
WANAPUM WA H Non-Failure 02/28/2014 Unknown Under Investigation WA00085-2000 An engineer noticed a slight irregular bowing above the spillway gates Divers found a 2-inch-wide crack that stretched for 65 feet along the base of one of the dam's spillway piers. Yes 0 Grant County authorities have activated an emergency-response plan. Officials said there is no threat to the public from the crack. The owner lowered water levels a total of 20 feet. After the lowering the crack closed and the monolith moved 1.75 inches back upstream U PGERCN HCR Y 206 ft 796000.00 14590.00 1965 WA00085 COLUMBIA RIVER 46.8731 -119.97 Federal Energy Regulatory Com
POND LICK LAKE DAM OH H Non-Failure 04/01/2014 Hydrologic/Flooding High Reservoir Level OH02385-2657 Dam came within a foot of overtopping during construction of repairs. No 0 0 0 0 Downstream residents were notified of the situation S RE R Y 22 ft 96.00 4.00 1938 OH02385 POND LICK RUN 38.69 -83.17 DEPARTMENT OF NATURAL RESOURCES OH DNR
LITTLE DEER CREEK SITE 2A (MCKNIGHT/RUTLEDGE) MD S Non-Failure 04/01/2014 Deterioration or Poor Condition Spillway Riser Failure Excessive/Increased Seepage MD00035-2662 Plugged Riser,Abutment Seepage Yes 0 0 P RE C Y 44 ft 523.00 5.00 1962 MD00035 TR-LITTLE DEER CREEK 39.6404 -76.5275 1962 MD Dam Safety one week MD Dam Safety
INLAND STEEL T MN S Failure 04/07/2014 Hydrologic/Flooding Overtopping MN00670-2648 Tailings basin decant water could not flow back to reclaim pond due to ice blockage in decant diversion ditch. Overtopped and failed. No 0 0 0 0 None 114,565 cubic feet of material; amount of water unknown P RE ST NR 55 ft 14500.00 1800.00 1976 MN00670 WUORI CREEK-CLOSED SYSTEM 47.6025 -92.4607 MNDNR WATERS <95 hours Yes Owner; MN DNR Dam Safety files.
WILLOW SPRINGS LAKE DAM GA L Failure 04/07/2014 Unknown Under Investigation GA02463-2020 GA Safe Dams Program investigated after reports of breaching. There was some evidence of overtopping in the past. Also trees and brush and a dilapidated spillway riser structure. No 0 1 Roads See attached inspection report. P RE R NR 39 ft 309.00 12.00 1954 GA02463 UNKNOWN 33.93 -84.9222 GA-SAFE DAMS PROGRAM Y
CARO DAM MI L Non-Failure 04/14/2014 Malfunction of Equipment/Gate Gate/Valve Failure MI00381-2060 structural failure of tainter gate due to deterioration No 0 0 P PG NR 19 ft 900.00 200.00 1928 MI00381 CASS RIVER 43.4617 -83.4167 Michigan DEQ
WRACO LODGE DAM MI L Failure 04/14/2014 Hydrologic/Flooding Overtopping MI01812-2021 peak discharge apparently exceeded spillway capacity, causing overtopping No 0 0 RE R NR 9 ft 1100.00 452.00 1928 MI01812 WOLF CREEK 44.221 -84.7741 Michigan DEQ
PVCC DAM VA L Non-Failure 04/27/2014 Malfunction of Equipment/Gate Gate/Valve Failure VA00380-2457 Gate/valve failure resulted in draining of lake damages limited to drained lake a fish kill S RE R Y 39 ft 109.00 2.00 1960 VA00380 TRIB. MOORES CREEK 38.0067 -78.4883 DCR
CRESCENT LAKE DAM FL L Failure 04/29/2014 Hydrologic/Flooding Overtopping FL00058-2650 20” or more of rain causing the Dam to overtop. An area approximately 200’ long on the west end of the Dam was totally
breached causing most of the water to drain from the lake. 		The breached Dam deposited sediment and debris into the adjacent wetlands to
the south of the Dam. The water overtopped Michigan Avenue to the south of the Dam. 		P RE RS N 16 ft 396.00 0.00 1960 FL00058 BAYOU MARCUS 30.46 -87.27 FL DEP Y
ROCKY GORGE DAM MD H Non-Failure 04/30/2014 Hydrologic/Flooding High Reservoir Level MD00020-2660 Large rain event during construction with exposed vulnerabilit Yes 0 400 L CBCN SR Y 134 ft 22000.00 773.00 1953 MD00020 PATUXENT RIVER 39.1167 -76.8751 2014 MD Dam Safety MD Dam Safety
LAKE BRUNSWICK DAM OH H Non-Failure 05/01/2014 Hydrologic/Flooding Overtopping OH00623-2654 Overtopping event for an RCC covered dam. No 0 0 0 0 L RE R Y 16 ft 133.00 13.00 1930 OH00623 PLUM CREEK 41.23 -81.81 DEPARTMENT OF NATURAL RESOURCES OH DNR
CAROL-JANE LAKE DAM OH S Non-Failure 05/01/2014 Hydrologic/Flooding Overtopping Spillway Erosion/Head Cutting OH01062-2655 Two minor overtopping events for the dam. Severe erosion in the emergency spillway. No 0 0 0 0 P RE R N 25 ft 41.00 4.00 1940 OH01062 TRIBUTARY TO WEST BRANCH ROCKY RIVER 41.19 -81.83 DEPARTMENT OF NATURAL RESOURCES OH DNR
CHADSWOOD SWM POND, CROSS LAUREL DRIVE MD S Non-Failure 05/01/2014 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole MD00497-3086 CMP culverts failed (deterioration at invert) resulting in sinkholes and slumps on upstream slope. No P RE C Y 20 ft 0.00 0.00 1981 MD00497 GREAT SENECA CREEK-TR 39.1896 -77.2293 2015 MD DAM SAFETY MDE Dam Safety Program
INDIAN HILL LAKE DAM TX L Non-Failure 05/12/2014 Unknown Spillway Deficiency TX02977-2712 SPILLWAY FAILED, DID NOT BREACH P RE R NR 28 ft 386.00 20.00 1960 TX02977 BLACK CREEK 30.8833 -95.6106 TCEQ TX DEQ
CORTI-JENCEN DAM VA H Failure 05/14/2014 Seepage/Internal Erosion Piping VA00000-2458 piping failure resulted in partial breach damages limited to the dam 1989 ft 0.00 VA00000 0 0 VA DEQ
GORSON DAM PA H Non-Failure 06/02/2014 Seepage/Internal Erosion Piping PA01084-3195 A SIGNIFICANT SEEP WAS DISCOVERED ALONG THE CONDUIT PIPE. No 0 0 0 0 EMERGENCY DRAWDOWN OF THE IMPOUNDMENT RECOMMENDED BY DEP DAM SAFETY. DUE TO EXTENT AND COST OF REQUIRED REPAIRS, PROPERTY OWNER CHOSE TO BREACH DAM AND RESTORE STREAM. P RE R 11 ft 0.00 1929 PA01084 MILL CREEK 41.1051 -74.5605 PADEP Yes PA Dam Safety Y
CARROLL TN S Non-Failure 06/05/2014 Malfunction of Equipment/Gate Gate/Valve Failure TN01703-2136 One of the two radial gates in the spillway gave way partially. The lake drained out under the bent gate. No 0 0 None None 1100 The left half of the dam overtopped briefly during this same time. S RE NR 20 ft 1848.00 110.00 1949 TN01703 CLEAR CREEK 36.1003 -88.4847 TENN SAFE DAMS PRG Y
HALLENBECK #1 CO H Non-Failure 06/10/2014 Seepage/Internal Erosion Cracking Other CO00085-3025 Dam exhibits unusual cracking and behavior of toe drains and piezometers. Yes Dam exhibits unusual cracking and behavior of toe drains and piezometers. EAP level 1 situational awareness issued by County EM, reservoir lowered for further evaluation. L RE SR Y 43 ft 1155.00 62.00 1970 CO00085 KAHNAH CREEK-TR 38.9693 -108.294 DWR CO DWR
LOWER MEADOWDALE DAM VA S Failure 06/11/2014 Seepage/Internal Erosion Piping VA04173-2447 piping failure resulting in partial breach Damage limited to the dam itself N 11 ft 49.60 0.00 VA04173 TRIB. FALLING CREEK 37.4373 -77.4567 DCR
LITTLE TONOLOWAY DAM MD L Non-Failure 06/12/2014 Hydrologic/Flooding High Reservoir Level MD00062-2659 8 inches rain in 4 hour Yes 0 0 P RE R NR 17 ft 66.00 7.00 1953 MD00062 LITTLE TONOLOWAY CREEK 39.6844 -78.2553 1953 MD Dam Safety MD Dam Safety
SOUTH MOUND CREEK POOL MN L Failure 06/14/2014 Hydrologic/Flooding Overtopping MN00111-2647 Flood overtopped dam and right embankment (emergency spillway) failed. Wooden dock floated loose and partially blocked principal spillway. No 0 0 0 1 Bridges DNR owed Dam. Operators notified DNR Dam Safety quickly. 200 acre-feet Grouted riprap on emergency spillway. Dam also failed in 1938. Downstream home was flooded but may have flooded without dam failure. Two downstream farmers claim dam breach damaged them. S PG R NR 24 ft 235.00 19.00 1940 MN00111 MOUND CREEK 43.7145 -96.1779 1940 MNDNR WATERS Between 9 pm and midnight <12 hours Yes State park staff; MN DNR Dam Safety files.
BUFFALO LAKE ROAD DAM 2 SD S Failure 06/23/2014 Deterioration or Poor Condition Spillway Pipe Failure Piping Sinkhole SD00407-2140 Based on news reports and SD Dam Safety info it appears that CMP spillways deteriorated and failed causing internal erosion and sink holes. High water in the lake exacerbated the erosion. Roads The CMP Spillway was added about 25 years ago per SD Dam Safety. Attached photos from both dam 1 & 2. S RE R Y 82 ft 2850.00 0.00 1961 SD00407 TR CHEYENNE 44.6217 -102.003 1991 DENR Y
BUFFALO LAKE ROAD DAM 1 SD S Failure 06/23/2014 Deterioration or Poor Condition Spillway Pipe Failure SD00518-2141 Based on news reports and SD Dam Safety info it appears that CMP spillways deteriorated and failed causing internal erosion and sink holes. High water in the lake exacerbated the erosion. Roads The CMP Spillway was added about 25 years ago per SD Dam Safety. Attached photos from both dam 1 & 2. S RE R Y 95 ft 2650.00 0.00 1961 SD00518 TR CHEYENNE 44.635 -101.897 1991 DENR Y
HIGH ISLAND CREEK MN L Failure 06/29/2014 Hydrologic/Flooding Overtopping MN00819-2649 Large rainfall washed out right earthen embankment. Earthen abutment lower than design. No 0 0 0 0 None None Run-of-river dam. Dam was removed later. S PG CO NR 9 ft 50.00 0.00 1958 MN00819 HIGH ISLAND CREEK 44.5756 -93.9924 MNDNR WATERS <12 hours No Citizen; DNR Fisheries staff; MN DNR Dam Safety files.
FINDLAY UPGROUND RESERVOIR NO. 2 OH H Non-Failure 07/01/2014 Deterioration or Poor Condition Spillway Pipe Failure OH00782-2653 Wet area noted at the downstream toe. Leak in the resevoir fill line. No 0 0 0 0 L RE S Y 32 ft 19478.00 624.00 1971 OH00782 BLANCHARD RIVER - OFFSTREAM 41.01 -83.57 DEPARTMENT OF NATURAL RESOURCES OH DNR
IVANHOE CO L Non-Failure 07/01/2014 Seepage/Internal Erosion Settlement Sinkhole CO00682-3026 Excessive settlement and cracking on the upstream face over the outlet piping Yes Report of Excessive settlement and cracking on the upstream face over the outlet piping. Level 1 EAP activation. Site visit revealed outlet works failure. Infor to reservoir can be shut off, and has been, and resevroir was ordered lowered, 0-storage restriction ordered. U RE IS Y 17 ft 1007.00 82.00 1928 CO00682 IVANHOE CREEK 39.2717 -106.509 1971 DWR CO DWR
RIEVES DAM VA L Non-Failure 07/03/2014 Deterioration or Poor Condition Spillway Riser Failure VA04123-2445 Plugged riser failed resulting in partial breach Damage limited to the dam itself P RE R NR 16 ft 50.00 0.00 1956 VA04123 ASHT0N CREEK 37.3412 -77.4463 DCR
KING NO. 1 WY L Failure 07/15/2014 Seepage/Internal Erosion Piping WY00328-2646 No 0 0 0 0 Other $100,000 to $500,000 2216 AF 1 ditch diversion structure damaged. No significant damage occurred downstream. Bids were $300,000 to repair the dam. P RE I NR 24 ft 2449.00 230.00 1922 WY00328 SEEPAGE CREEK 41.5933 -106.063 SEO 12 a.m. to 4 a.m. Estimated Less than 4 hours Yes WY State Engineer's Office Y
TWAIN HARTE CA S Non-Failure 08/03/2014 Unknown Under Investigation CA00649-2160 The dam was built on solid granite. Very hard solid rock. On 8/3 the massive right abutment rock, exfoliated. This created a new seepage path which resulted in 50 gpm additional seepage. Previous to this there was only wet spots and no active seepage. 0 We immediately drew down the reservoir to make a detailed inspection and as a precautionary measure. The situation is now stable and no dam safety threat. We will complete detailed analysis of the dam and abutment to figure out next steps. I think we will conclude the dam wasn¿t in danger, but we will see. P MV RS NR 36 ft 143.00 12.00 1928 CA00649 TR SULLIVAN CR 38.0291 -120.244 Division of Safety of Dams Y
NEW JERSEY NO NAME # 32 DAM NJ S Non-Failure 08/05/2014 Hydrologic/Flooding Erosion NJ00520-2863 erosion of subgrade under articulated concrete block at auxiliary spillway 0 0 P PGRE R Y 40 ft 166.00 15.00 1967 NJ00520 SOUTH BRANCH RARITAN RIVER 40.5893 -74.9022 NJDEP NJ DEP
BEAUFONT SPRING DAM VA S Non-Failure 08/06/2014 Hydrologic/Flooding Overtopping VA04177-2443 Overtopping resulted in erosion of downstream face Damage limited to the dam itself P N 33 ft 139.00 0.00 VA04177 TRIB. POWHITE CREEK 37.5078 -77.5312 DCR
WHEATON BRANCH STORM WATER MANAGEMENT MD H Non-Failure 08/12/2014 Hydrologic/Flooding High Reservoir Level MD00127-2658 Large rain even Yes 0 0 L RE C Y 27 ft 196.00 3.00 1979 MD00127 TR-SLIGO CREEK 39.0247 -77.0383 1990 MD Dam Safety one day MD Dam Safety
RABEL DAM WA S Non-Failure 08/21/2014 Hydrologic/Flooding Overtopping WA00308-2263 Fire-swept Benson Creek watershed received from 0.4 to 0.9 inches of rain in a one-hour period. Debris blocked the spillway and caused the reservoir to fill and overtop the dam. 0 0 0 0 None Active intervention by the dam owners re-opened the spillway in time to prevent further damage to the dam and spillway.
See the attached incident report. 		P RE R N 24 ft 150.00 11.00 1940 WA00308 TR-BENSON CREEK 48.3228 -119.998 1992 Washington, Dept of Ecology Yes Y
HAWKINS DAM WA S Failure 08/21/2014 Hydrologic/Flooding Spillway Erosion/Head Cutting WA00320-2267 Fire-swept Benson Creek watershed received from 0.4 to 0.9 inches of rain in one hour. Debris obstructed the spillway-the dam didn't overtop. Erosion in the spillway channel down-cut into the lake and draining it. 0 0 0 0 None See the attached incident report. P RE IR N 33 ft 60.00 3.00 1940 WA00320 TR-BENSON CREEK 48.3139 -120.002 1992 Washington, Dept of Ecology Yes Y
CHALFA DAM WA S Non-Failure 08/21/2014 Hydrologic/Flooding Other